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Vendor : Oracle
Exam Code : 1Z0-873
Exam Name : MySQL 5 Database Administrator Certified Professional Part I
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1Z0-873 Questions and Answers

Pass4sure 1Z0-873 Dumps with Real Questions & Practice Test
  1. Use the --log-queries-indexes option.

  2. Use the --log-slow-queries-indexes option.

  3. Use the --log-queries-not-using-indexes option.

  4. Use the --log-slow-queries-not-using-indexes option.


Answer: C


QUESTION: 123

Which of the following best describe what the mysql_tzinfo_to_sql script is needed for and how to use it?


  1. The script is used to convert Unix-type timezone files into SQL statements that can be loaded.

  2. The script is used to insert timezone files into MySQL.

  3. shell> mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root mysql

  4. shell> /usr/share/zoneinfo mysql_tzinfo_to_sql | mysql -u root mysql


Answer: A,D


QUESTION: 124

Which of the following steps should be performed in order to secure a MySQL server freshly installed from a binary tarball.


  1. All initial accounts should have passwords set and unused accounts should be removed.

  2. The MySQL server should be set to run as it's own user, not as an administrative account.

  3. The data directory and it's contents should be strictly accessible only to the user MySQL runs as.

  4. The server should be started with the mysqld_secure script.


Answer: A,B


QUESTION: 125

Which of the following are true with regards to the server SQL mode?


  1. The server SQL mode determines how the server should behave when performing data validation checks and interpreting different forms of syntax.

  2. The server SQL mode determines whether the server should be read-only or accept commands such as INSERT, UPDATE, etc.

  3. The default SQL mode can be set by adding a mode="" to the [mysqld] section of a server option file.

  4. The SQL mode can be changed at the session level with a SET SESSION sql_mode="" command.


Answer: B


QUESTION: 126

Which of the following should be done before upgrading the mysql server to a newer version?


  1. Read and understand the appropriate "Upgrading MySQL" section of the online manual.

  2. Read through the online change notes and understand the changes made between the versions.

  3. Prepare the datadir to be read in by a new version by running the mysqlupgrade -- prepare command on it.

  4. Nothing; MySQL data files are binary compatible between all versions and the server will automatically perform any conversions needed.


Answer: A


QUESTION: 127

When you upgrade from one version of MySQL to another which of these steps are considered necessary?


  1. Check the MySQL Reference Manual upgrading section and read the parts that concern your upgrade

  2. Backup your databases

  3. Stop the MySQL server

  4. Install the new version of MySQL on top of the existing version

  5. Start the new server

  6. None of the above


Answer: B


QUESTION: 128

mysqldump can be instructed to include commands to drop and recreate tables before trying to create or load data.


  1. True

  2. False


Answer: A


QUESTION: 129

Which of the following best describe a replication setup with regard to backup procedures?


  1. 24 by 7 operations can be maintained but backups may not consist of a full snapshot

  2. 24 by 7 operations can be maintained but may be halted at backup time.

  3. 24 by 7 operations can be maintained without interruptions.

  4. 24 by 7 operations can be maintained with backups from a slave server.

  5. 24 by 7 operations can be maintained with a slave being the "hot spare".

  6. none of the above.


Answer: B


QUESTION: 130

When backing up a replication slave, which of the following replication files should also be backed up?


  1. The master.info file

  2. Any relay logs

  3. The relay index

  4. The world db file

  5. The replication world file

  6. None of the above


Answer: A,B


QUESTION: 131

Assume you created a backup of the world database by the following statement. shell> mysqldump --opt world > dump.sql How can you import the data from this dumped file into the test database?

  1. shell> mysql test < dump.sql

  2. shell> mysqladmin recover test dump.sql

  3. mysql> USE test;mysql> SOURCE dump.sql;

  4. mysql> RECOVER test dump.sql;


Answer: A,C


QUESTION: 132

You have created a dump using mysqldump with the --extended-insert option. Will you be able to use this dump on any MySQL server instance?


  1. Always

  2. Yes, provided that --max-allowed-packet is set correctly

  3. Yes, provided that binary logging is turned off during the re-reading of the dump.

  4. No, the new server instance must be the same version as the one which created the dump for everything to work


Answer: B


QUESTION: 133

The MySQL server host crashes at 10:00 in the morning, and is brought back online at 10:30. In order to ensure that all data are consistent, a copy is first made of the table, tablespace and log files currently on the server host, and these files are then restored from a backup made at 03:00 the same morning. What should be done in order to bring the database to the state it was at just before the server host crashed?


  1. The mysql_restore utility should be used to update the server to its last known state.

  2. The binary logs recorded after the backup at 03:00 should be re-applied to make the database file consistent with the state just before the crash.

  3. The procedure described is wrong; instead, the mysqlcheck utility should be used and only if that fails should backup copies be restored.

  4. Once the backup files from 03:00 have been restored, there is nothing more that can be done to restore the database files.


Answer: B


QUESTION: 134

Consider the three binary log files bin.00010, bin.00011 and bin.00012 which you want to restore data from. How should you process these files when using mysqlbinlog to satisfy inter-file dependencies?


  1. shell> mysqlbinlog bin.00010 | mysqlshell> mysqlbinlog bin.00011 | mysqlshell> mysqlbinlog bin.00012 |mysql

  2. shell> mysqlbinlog bin.00010 bin.00011 bin.00012 | mysql

  3. You can use both of the above statements, i.e. process the files either in a group or separately. All inter-file dependencies will be taken care of with both methods.


Answer: B


QUESTION: 135

Consider the available command line options of mysqlbinlog. Which of the following statements are true?


  1. --start-position will read the binlog entries starting at the specified position

  2. --end-position will read the binlog entries up to the specified position

  3. --start-datetime will read the binlog entries starting at the specified date and time

  4. --end-datetime will read the binlog entries up to the specified date and time

  5. --start-file will read the binlog entries starting with the specified filename

  6. --end-file will read the binlog entries ending after the specified filename


Answer: C


QUESTION: 136

Which of the following SQL constructs are not available with all storage engines, i.e. which are storage engine dependent?


  1. BEGIN and ROLLBACK have an effect only for tables managed by transactional storage engines, such as InnoDB.

  2. Some index types are available only for particular storage engines. For example, only the MyISAM engine supports full-text or spatial indexes.

  3. LOAD DATA INFILE only works for tables managed by disk based storage engines, such as InnoDB or MyISAM.

  4. OPTIMIZE TABLE only works for tables managed by storage engines that perform table level locking, such as MyISAM.


Answer: B


QUESTION: 137

Which of the following are true regarding the key buffer cache?


  1. The key buffer is used for caching index blocks for MyISAM tables.

  2. The key buffer is used for caching index blocks for all MySQL tables.

  3. Setting the buffer to a larger size will generally increase performance.

  4. Setting the buffer to a larger size will generally decrease performance.


Answer: C


QUESTION: 138

Which of the following are true regarding the table cache?


  1. It is used to cache row data in open tables.

  2. It holds file descriptors for open tables.

  3. The size of the table cache may be set per-session

  4. Each connection has its own table cache. They are of equal size, set globally.

  5. There is one table cache, shared among all sessions.

  6. Increasing the size of the variable table_cache allows mysqld to keep more tables open simultaneously.


Answer: B


QUESTION: 139

In which of the following files must the base directory be specified if MySQL is not installed in the default directory for the platform?


  1. config.cnf

  2. config.ini

  3. my.cnf

  4. my.ini

  5. basedir.cnf

  6. basedir.ini


Answer: C


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That doubtless explains why Microsoft presents database-connected credentials at each degree of its certification program, from the Microsoft technology affiliate (MTA) all of the way to the Microsoft certified options expert (MCSE) program. In September 2016, Microsoft announced huge changes to its certification program, including 5 new certifications to the MCSE and Microsoft licensed options Developer (MCSD) programs by myself. These certifications are designed to assist windows Server 2016 and Microsoft SQL Server 2016, amongst other technologies. For database administrators, the new MCSE: statistics administration and Analytics can be of most interest, which you are going to find out about later during this section. study Microsoft SQL and DataBase ideas from scratch on Udemy MTA The MTA software contains a single database-linked exam: Database Fundamentals (ninety eight-364). This credential is most suitable for students or as an entry-degree cert for professionals seeking to segue into database aid. MCSA Microsoft offers several SQL-connected credentials at the Microsoft certified solutions associate (MCSA) degree: MCSA: SQL Server 2012/2014 (three exams) MCSA: SQL 2016 BI construction (two checks) MCSA: SQL 2016 Database Administration (two exams) MCSA: SQL 2016 Database development (two checks) MCSE on the Microsoft MCSE level, there's one SQL database credential: statistics administration and Analytics. This certification requires an MCSA as a prerequisite (list of valid objects follows in table) after which passing one elective examination. Microsoft SQL Server Database Certification statistics & Figures Certification name MTA DatabaseMCSA: SQL Server 2012/2014MCSA: SQL 2016 BI DevelopmentMCSA: SQL 2016 Database AdministrationMCSA: SQL 2016 Database DevelopmentMCSE: records administration and Analytics prerequisites & Required courses No must haves for:MTA DatabaseMCSA: SQL Server 2012/2014MCSA: SQL 2016 BI DevelopmentMCSA: SQL 2016 Database AdministrationMCSA: SQL 2016 Database development MCSE records management and Analytics prerequisite (best one required):MCSA: SQL Server 2012/2014MCSA: SQL 2016 BI DevelopmentMCSA: SQL 2016 Database AdministrationMCSA: SQL 2016 Database DevelopmentMCSA: laptop LearningMCSA: BI ReportingMCSA: facts Engineering with Azure training classes purchasable and informed for all certifications however no longer required. variety of checks MTA: One examination, Database Fundamentals (98-364) MCSA: SQL Server: Three exams:Querying Microsoft SQL Server 2012/2014 (70-461)Administering Microsoft SQL Server 2012/2014 Databases (70-462) imposing a knowledge Warehouse with Microsoft SQL Server 2012/2014 (70-463) MCSA: SQL 2016 BI development: Two exams:implementing a SQL data Warehouse (70-767)constructing SQL statistics fashions (70-768) MCSA: SQL 2016 Database Administration: Two assessments:Administering a SQL Database Infrastructure (70-764)Provisioning SQL Databases (70-765) MCSA: SQL 2016 Database building: Two assessments:Querying information with Transact-SQL (70-761)developing SQL Databases (70-762) MCSE: statistics administration and Analytics: One examination:Designing and enforcing Cloud data Platform solutions (70-473)Designing and implementing huge records Analytics solutions (70-475)establishing Microsoft SQL Server Databases (70-464)Designing Database options for Microsoft SQL Server (70-465)enforcing statistics models and reviews with Microsoft SQL Server (70-466)Designing business Intelligence options with Microsoft SQL Server (70-467)establishing SQL Databases (70-762)enforcing a data Warehouse the use of SQL (70-767)developing SQL information models (70-768)inspecting large facts with Microsoft R (70-773)perform Cloud statistics Science with Azure computing device studying (70-774)function information Engineering on Microsoft Azure HDInsight (70-775) implementing Microsoft Azure Cosmos DB options (Beta) (70-777) All assessments administered by means of Pearson VUE. can charge per examination MTA: $127 (or equivalent in native forex outdoor the United States)MCSA/MCSE: $a hundred sixty five (or equivalent) per examination URL www.microsoft.com/gaining knowledge of/en-us/certification-overview.aspx Self-study materials Microsoft offers one of the crucial world's largest and most beneficial-primary IT certification courses, so the MTA, MCSA and MCSE certs are neatly-supported with books, analyze courses, study corporations, observe exams and different materials. extra: Microsoft Certifications & career Paths four. Oracle certified knowledgeable, MySQL 5.7 Database Administrator Oracle runs its certifications beneath the auspices of Oracle university. The Oracle Database Certifications web page lists separate tracks for Database utility development (SQL and PL/SQL), MySQL (Database Administration and Developer) and Oracle Database (versions 12c, 12c R2, and 11g, and Oracle Spatial 11g). MySQL is in all probability the leading open-supply relational database administration system (RDBMS). seeing that buying sun Microsystems in 2010 (which had up to now bought MySQL AB), Oracle has rolled out a paid version of MySQL and developed certifications to aid the product. A candidate drawn to pursuing an Oracle MySQL certification can make a choice from MySQL Database Administration or MySQL Developer. The Oracle licensed knowledgeable – MySQL 5.7 Database Administrator (OCP) – credential acknowledges gurus who can installation, optimize and display screen MySQL Server, configure replication, practice protection, and time table and validate database backups. The certification requires candidates to pass a single exam (the same examination will also be taken to improve a previous certification). Oracle recommends practising and on-the-job event earlier than taking the exam. Oracle certified skilled, MySQL 5.7 Database Administrator information & Figures greater: Oracle Certifications & career Paths 5. Oracle Database 12c Administrator Most Oracle DBMS credentials require candidates to attend licensed practicing courses to qualify for the linked exam, but MySQL (and sun-derived) credentials frequently don't. Oracle certifications additionally signify a true ladder, in that it's commonly critical to earn the affiliate-stage credentials first, knowledgeable-level credentials 2nd and grasp-level credentials third, culminating at the knowledgeable stage. Oracle Database 12c R2 is the newest Oracle database version, which includes enhancements to Oracle Database 12c. currently, Oracle 12c certifications are offered at the associate, professional and grasp tiers. A Foundations Junior affiliate certification (beginner level) is also accessible for Oracle Database 12c, as are three specialist designations – the Implementation expert, the Oracle Database efficiency and Tuning 2015 licensed Implementation professional, and the Oracle actual software Clusters 12c certified Implementation specialist. knowledgeable-level credentials that can be found include the Oracle certified knowledgeable, Oracle Database 12c: RAC and Grid Infrastructure Administrator, Oracle Database 12c optimum Availability licensed professional, Oracle licensed professional, Oracle Database 12c: statistics look after Administrator, the Oracle licensed knowledgeable, and the Oracle Database 12c: performance management and Tuning. Oracle presents two 12c R2 certifications: Oracle Database 12c R2 Administration licensed affiliate and professional. Oracle 11g certifications are nonetheless offered as well. notice: despite the fact premium guide for Oracle 11g Database ended on Dec. 31, 2014, extended aid is except December 2020, so it be possibly Oracle Database 11g will stay in use for the following few years. We focal point on necessities for Oracle 12c and 12c R2 Database certifications. One essential consideration is that Oracle 11g is ahead-appropriate with Oracle 12c, however Oracle 12c isn't backward- appropriate with the prior edition. as a result of Oracle 12c is a more recent edition, IT specialists possessing Oracle 11g certifications should explore upgrades to those credentials. Oracle Database 12c and 12c R2 Administrator facts & Figures Certification name Oracle Database 12c Administrator certified affiliate (OCA 12c)Oracle Database 12c Administrator licensed professional (OCP 12c)Oracle Database 12c Administrator licensed master Certification (OCM 12c)Oracle Database 12c maximum Availability licensed MasterOracle Database 12c R2 Administration licensed affiliate (OCA 12c R2)Oracle Database 12c R2 Administration certified professional (OCP 12c R2) upgrade must haves & Required classes OCA 12c: practising counseled however now not required OCP 12c: OCA 12c credential, one working towards course required, comprehensive route submission form OCM 12c: OCP 12c or 12cR2 credential, two superior training lessons (ought to be distinctive than the route used to achieve the OCP), complete direction submission kind, post success kit Request Oracle Database 12c highest Availability certified master: Three credentials:Oracle Database12c Administrator licensed MasterOracle certified expert, Oracle Database 12c: RAC and Grid Infrastructure AdministrationOracle certified professional, Oracle Database 12c: information safeguard Administration OCA 12c R2: OCA Database SQL, OCA 11g, OCA 12c or 12c SQL Fundamentals OCP 12c R2: OCA 12cR2 credential, comprehensive required working towards direction, comprehensive the path submission kind. Oracle practising: classes customarily run two to five days; fees range between $1,360 to over $5,580 variety of exams OCA 12c: Two examsChoose one examination from the following: Oracle Database 12c SQL (1Z0-071) (73 questions, 100 minutes) OR Oracle Database 12c: SQL Fundamentals (1Z0-061) (75 questions, one hundred twenty minutes) PLUS Oracle Database 12c: installing and Administration (1Z0-062) (sixty seven questions, one hundred twenty minutes) OCP 12c: One examination: Oracle Database 12c: superior Administration (1Z0-063) (80 questions, 120 minutes)OCM 12c: One examination: Oracle Database 12c licensed grasp (12COCM), a two-day, efficiency-based examination Oracle Database 12c optimum Availability licensed grasp: NoneOCA 12c R2: One examination: Oracle Database 12cR2 Administration (1Z0-072) (70 questions, 90 minutes)OCP 12c R2: One examination: Oracle DBA 12cR2 superior Administration (1Z0-073) (70 questions, 100 minutes) cost per examination OCA 12c: 1Z0-061 fees $125; 1Z0-071 and 1Z0-062 charge $245 each OCP 12c: 1Z0-063 costs $245 OCM 12c: 12COCM prices $2,584; contact Oracle for pricing/availability of improve exam Oracle Database 12c optimum Availability licensed master: None OCA 12c R2: 1Z0-072 fees $245 OCP 12c R2: 1Z0-073 costs $245 word: costs fluctuate with the aid of geography URL https://education.oracle.com/pls/web_prod-plq-dad/ou_product_category.getFamilyPage?p_family_id=32&p_mode=Certification Self-examine materials each and every Oracle certification examination webpage lists exam topics in addition to recommended working towards classes, seminars and observe tests. a number of self-study publications are available on Amazon. Oracle Database certification candidates improvement from pupil manuals, labs and utility offered as part of type offerings. greater: Oracle Certifications & profession Paths 6. SAP HANA: SAP certified expertise affiliate - SAP HANA (edition 2016) SAP SE (SAP) has a huge portfolio of company software and analytics software, including cloud infrastructure, applications, and storage. The groundwork of the SAP HANA platform is an business-grade relational database management system, which can be run as an equipment on premises or in the cloud. The cloud platform allows for customers to build and run purposes and features based on SAP HANA. SAP presents a big certification application, built to support its a lot of platforms and products. We chose to function the SAP licensed expertise associate - SAP HANA cert, since it is closely aligned with other certifications in this article and since of enterprise demand. This certification ensures that database specialists can set up, manage, display screen, migrate and troubleshoot SAP HANA techniques, which covers managing clients and authorization, making use of security, and making certain high availability and catastrophe recovery concepts. SAP recommends that certification candidates get fingers-on practice via working towards or on-the-job event before trying this examination. The SAP discovering Hub is a subscription service that offers entry to a library of getting to know substances, together with e-studying classes and path handbooks. A free trial is available for first-time clients; the annual subscription fee for particular person clients is ready $300. usually, SAP certifications achieved on one of the most two most recent SAP options are regarded current and valid. SAP contacts gurus whose certifications are nearing end of lifestyles and gives assistance on holding their credentials. SAP HANA information & Figures Certification identify SAP licensed know-how associate - SAP HANA (version 2016) prerequisites & Required courses None required suggested: SAP HANA setting up & Operations SPS12 (HA200) path, $three,750 number of assessments One exam: SAP licensed application affiliate - SAP HANA (version 2016), exam code C_HANATEC_12, (eighty questions, a hundred and eighty minutes) cost per exam $500. buy exam voucher through SAP. examination administered by way of SAP training organization facilities and Pearson VUE. URL https://working towards.sap.com/certification/c_hanatec_12-sap-certified-expertise-affiliate---sap-hana-version-2016-g/ Self-examine substances The certification webpage contains a link to pattern questions. SAP HANA alternate books and certification publications are available on Amazon. The SAP help center presents product documentation and a training and certification FAQ. The SAP gaining knowledge of Hub (purchasable on a subscription groundwork) offers access to on-line gaining knowledge of content. greater: SAP Certifications & profession Paths 7. past the proper 5: extra database certifications beyond the objects mentioned in this article, other database certification courses can be found to extra the careers and professional development of IT specialists who work with database administration methods. whereas most colleges with desktop classes offer database tracks at the undergraduate, grasp's and Ph.D. tiers, there are few commonplace dealer-neutral database certifications. The Institute for the Certification of Computing professionals (ICCP) is a component of this wonderful group, offering its licensed statistics knowledgeable (CDMP). EnterpriseDB administers a small however constructive certification application, with two basic certs: the PostgreSQL affiliate and the PostgreSQL expert. PostgreSQL is the No. 4-ranked relational database management equipment in August 2018 according to DB-Engines. Credentials from Google, MarkLogic, Teradata and SAS can also even be value puzzling over. besides the fact that children, such niches in the database certification enviornment are often handiest value pursuing in case you already work with such structures or plan to work for an outfit that uses them. Migrate from the MySQL Extension to PDO | 1Z0-873 Real Questions and VCE Practice Test This e-book is a realistic overview to help you start migrating your current personal home page code from the use of the older MySQL extension to the more moderen PDO database abstraction extension. I received’t go into the entire features obtainable to you with PDO, however i'll share with you the basic strategies you're going to need to know and offer a couple of guidance so your migration can be as short and painless as feasible. First, you should understand where PDO sits in the personal home page ecosystem. There are in fact three ways to interface with a MySQL database from php: the first is with the MySQL extension, the 2nd is with the MySQLi extension and the third is with PDO. The MySQL extension is the oldest of the three and become the common alternative developers used to speak with MySQL. The extension is now being deprecated in want of the other two options as a result of advancements made in more recent releases of both personal home page and MySQL. MySQLi is the “improved” extension for working with MySQL databases. It takes expertise of aspects that are available in more recent models of the MySQL server, exposes both a feature-oriented and an object-oriented interface to the developer and a does few other nifty things. If PDO isn’t correct in your project, then this is the extension you'll want to be the usage of. Then most recent extension is PDO, which stands for “php records Objects.” PDO presents an API that consolidates most of the performance that became up to now unfold across the main database entry extensions, i.e. MySQL, PostgreSQL, SQLite, MSSQL, and so on. The interface exposes high-level objects for the programmer to work with database connections, queries and effect units, and low-degree drivers perform verbal exchange and aid handling with the database server. a lot of dialogue and work is going into PDO and it’s regarded the applicable method of working with databases in up to date, skilled code. When feasible, i recommend americans skip the middle man so that you can communicate and migrate from the MySQL extension to PDO in preference to to MySQLi. PDO offers a constant API to work with a number of databases, so that you received’t should alter your personal home page code if you ever should use a further database. also, whereas the MySQLi extension is at the moment maintained, there’s always the opportunity it could be deprecated in the future. deciding on to migrate to PDO now capability you gained’t ought to migrate to it later and replace your code twice. i use PDO and also you should still too! setting up and Configuring PDO once you’ve determined you are looking to modernize your code, you’ll should make sure PDO is properly set up and configured. As i discussed before, PDO carries two components: the extension itself which exposes the interface and a low-degree database-specific driver. Drivers exist for a starting to be list of databases, together with MySQL. PDO and the SQLite-specific driver may still be a part of the default php setting up as of version 5.1.0 and the MySQL-specific driver would still deserve to be put in, but most Linux distributions commonly have diverse ideas how Hypertext Preprocessor may still be compiled and packaged. in reality, lots of the principal distros now package the MySQL extension, the MySQLi extension and the MySQL PDO driver collectively within the identical package. chances are high in case you’re the usage of MySQL on such a equipment then PDO is probably already installation for you. Ubuntu builds Hypertext Preprocessor with PDO (however doesn't package the SQLite driver by using default) and bundles collectively the MySQL extensions and driver. that you can set up the extensions and driver through running sudo apt-get deploy php5-mysql. Fedora additionally bundles the extensions and driver together, however packages PDO as a loadable module. running sudo yum set up personal home page-mysql installs the MySQL extensions and driver and the php-pdo equipment will automatically be blanketed as a dependency. SUSE is the only distribution of the three that builds Hypertext Preprocessor the style the php crew recommends in regards to PDO; they builds personal home page with PDO and include the SQLite driver. yast2 --install php5-mysql will deploy the MySQL extensions and driver you want. On home windows, the entire PDO drivers are covered in the ext folder that became created in the event you installed Hypertext Preprocessor from the pre-compiled binary’s archive. You most effective deserve to replace your personal home page.ini with the aid of including or uncommenting the line: extension=php_pdo_mysql.dll It’s always possible to bring together the drivers yourself in a worse-case scenario. be certain the MySQL libraries and other building information are installed and purchasable to your build environment because most complications that people come upon while trying to collect some thing results when the compiler can’t discover a number of header information or libraries to link in opposition t. fundamental Querying The simple workflow for the use of the MySQL extension’s features to work with a database can be concept of as a 5-step system: establish a connection to the database server and select the database you’ll be working with construct a query to ship the server ship the question Iterate over the returned effect rows Free the elements used through the outcome and might be the database connection With PDO, the same technique can also be followed and looks like this: The system of connecting to the server and picking the database with PDO is performed using a DSN as a substitute of the myql_connect() and mysql_select_db(). A DSN is an abbreviation for “facts supply identify” which is a string that identifies which PDO driver to make use of to talk with the database and conveys any basic connection information such because the host server, connection port and database name. depending on your database, the format of the DSN you deliver may fluctuate. The main add-ons critical for each driver are documented on personal home page.internet, however sadly they are now and again challenging to find. i like to recommend using the web page’s search characteristic to search for the time period “DSN” in the online documentation. also be aware that PDO::quote() each escapes and quotes a worth whereas mysql_real_escape() best escapes the value. you'll want to hold this in intellect so that you don’t emerge as with added citation marks in the ultimate query and scratch your head questioning where they came from. while on occasion which you could get away with out freeing the outcomes aid with mysql_free_result(), i like to recommend you don’t get into such lazy habits when the usage of PDO. if you nonetheless have a result set from a select question which hasn’t called closeCursor() yet and also you are trying to do an INSERT or update on the desk, the trade might also silently fail and again you’ll be left scratching your head. It’s stronger to make a dependancy out of doing issues properly to evade irritating instances later. Digging (a bit) Deeper What has been covered so far is satisfactory to get you begun in migrating your Hypertext Preprocessor app from MySQL to PDO as directly and painlessly as possible, however there’s more to PDO than what I’ve proven you. I’d want to additionally highlight a couple of different aspects PDO you may additionally discover helpful: organized statements and blunder handling. prepared Statements A prepared commentary is a illustration of a question as an object. The advantage of representing a query as an object is that extra common sense can be linked to it that might otherwise be intricate to manage for a flat string representation. as an example, you can specify placeholders in a query that are then bound to variables to your script. here's helpful if you’re working the equal question assorted instances to satisfy the request however with distinctive parameters. The question handiest has to be prepared once, however can also be run time and again with different values because the price of the variables exchange. The parameters don’t ought to be quoted or escaped with organized statements because the underlying driver instantly rates and escapes any bound parameters for you. because of this, many americans want to use prepared statements to defend against SQL injection vulnerabilities even if the question is simply finished once. Error coping with which you can specify one of three distinctive error dealing with paradigms with PDO through the use of PDO::setAttribute() to set the error managing mode. The modes are: Silent Mode (PDO::ERRMODE_SILENT) – units the interior error code however does not interrupt the script’s execution (here's the default surroundings) Warning Mode (PDO::ERRMODE_WARNING) – units the error code and triggers an E_WARNING message Exception Mode (PDO::ERRMODE_EXCEPTION) – sets the error code and throws a PDOException object despite which mode is set, there is an inner error code which is set and you may determine using the errorCode() and errorInfo() methods of the PDO and PDOStatement objects. These are analogous to mysql_errno() and mysql_error(). errorCode() returns a 5-personality string as defined within the ANSI SQL-92. errorInfo() is commonly greater beneficial as it returns an array that includes an error message apart from the 5-personality code. when you are the usage of the exception mode, a description of what went incorrect is purchasable in the course of the exception object’s getMessage() method. Now make sure you have the primary advantage critical to beginning migrating from the older MySQL extension to the more moderen PDO extension. You’ve seen that while most of the time PDO is already purchasable, it’s easy to deploy if for some rationale it isn’t. You’ve additionally seen how easy it's to connect to a MySQL database server, problem queries and get hold of the outcomes. Of course this become simply a practical overview; to be taught more about what PDO has to present and how that you would be able to take abilities of it, I inspire you to study the available documentation at php.net. photograph by means of Dirk Ercken / Shutterstock Timothy Boronczyk is a native of Syracuse, big apple, where he lives and not using a wife and no cats. He has a degree in utility utility Programming, is a Zend licensed Engineer, and an authorized Scrum master. by day, Timothy works as a developer at ShoreGroup, Inc. by way of evening, he freelances as a creator and editor. Timothy enjoys spending what little spare time he has left touring friends, dabbling with Esperanto, and napping along with his feet off the end of his mattress. Muthusamy Anantha Kumar aka The MAK | 1Z0-873 Real Questions and VCE Practice Test mak@mssqlengineering.com [MAK2009] Muthusamy Anantha Kumar, a.k.a. MAK, is a Microsoft licensed IT expert - Database Administrator ( (MCITP: Database Administrator). He has more than 10 years of event in counsel technology together with database Administration, system evaluation, Design, construction and assist of MS SQL Server 2005/2000/7.0/6.5/6.0/4.X for construction/development/testing. he is experienced in MS SQL Server Engineering, setting up, configuration, efficiency tuning, customer/server connectivity, question optimization, lower back-up/recuperation. He has handled VLDBs and been worried in SDLC of quite a lot of information warehouse projects. currently, MAK is Senior Database Engineer responsible for Engineering and standardizing Microsoft SQL Servers in a single of the massive finance companies on Wall road. previously, he turned into a Senior Database Administrator/information Architect, liable for construction, examine, DR and production servers for a lot of finance, .com and B2B corporations. He plays an lively function in forums as a SQL expert and moderator. MAK has written a Wrox e-book titled “Microsoft SQL Server 2008 Administration with home windows PowerShell” with Yan Pan, who is also a columnist for DatabaseJournal.com. [mak_mic_2005] [mak_mic_certificate] [mak_mic_dbadmin] Article collectionAuditing in SQL Server 2008Working with .MDF and .LDF information in SQL Server 2008Database Mirroring in SQL Server 2008Microsoft windows PowerShell and SQL Server 2008 AMOCheck your SQL Server the usage of home windows PowerShellMicrosoft SQL Server 2008 - change records CaptureData Encryption in SQL Server 2005Microsoft home windows PowerShell and SQL Server 2005 SMOCase features in SQL ServerSQL Server 2005 Command Line device ?SQLCMD?facts partitioning in SQL Server 2005SQL Server 2005 - Unattended installationSQL Server 2008 ArticlesSQL Server 2005 Articles:SQL Server 7/2000 Articles:Scripts:VB ScriptsCurrent Articles Obviously it is hard assignment to pick solid certification questions/answers assets concerning review, reputation and validity since individuals get sham because of picking incorrectly benefit. 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Top 5 database certifications Savvy, talented and knowledgeable database professionals are always in demand. Here are some of the best certifications for DBAs, database developers and anyone else working with databases. During the past three decades, we've seen a lot of database platforms come and go, but there's never been any question that database technology can be a crucial component for all kinds of applications and computing tasks. Database certifications may not be as sexy or bleeding edge as cloud computing, storage or computer forensics, but the reality is that there has been and will always be a need for knowledgeable database professionals at all levels and in numerous database-related job roles. To get a better grasp of the available database certifications, it's useful to group them around job roles. In part, this reflects the maturity of database technology and its integration into most aspects of commercial, scientific and academic computing. As you read about the various database certification programs, keep these job roles in mind: Database administrator (DBA): Responsible for installing, configuring and maintaining a database management system (DBMS). Often tied to a specific platform such as Oracle, MySQL, DB2, SQL Server and others. Database developer: Works with generic and proprietary APIs to build applications that interact with DBMSs (also platform specific, as with DBA roles). Database designer/database architect: Researches data requirements for specific applications or users, and designs database structures and application capabilities to match. Data analyst/data scientist: Responsible for analyzing data from multiple disparate sources to discover previously hidden insight, determine meaning behind the data and make business-specific recommendations. Data mining/business intelligence (BI) specialist: Specializes in dissecting, analyzing, and reporting on important data streams, such as customer data, supply chain data, transaction data and histories, and others. Data warehousing specialist: Specializes in assembling and analyzing data from multiple operational systems (orders, transactions, supply chain information, customer data, etc.) to establish data history, analyze trends, generate reports and forecasts, and support general ad hoc queries. Careful attention to these database job roles highlights two important technical issues for would-be database professionals to consider. First, a good general background in relational database management systems, including an understanding of structured query language (SQL), is a basic prerequisite for all database professionals. Second, although various efforts to standardize database technology exist, much of the whiz-bang capability that databases and database applications deliver come from proprietary, vendor-specific technologies. Serious, heavy-duty database skills and knowledge are tied to specific platforms, including various Oracle products (such as the open source MySQL environment and Oracle itself), Microsoft SQL Server, IBM DB2 and more. That's why most of the certifications relate directly to those very same and enormously popular platforms. It's important to note that NoSQL databases – referred to as "not only SQL" and sometimes "nonrelational" – handle many different types of data, such as structured, semi-structured, unstructured and polymorphic. NoSQL databases are increasingly used in big data applications, which tend to be associated with certifications for data scientists, data mining/warehousing and business intelligence. Although there is some natural overlap, for the most part, we cover those certs in our annually updated Best Big Data Certifications article. Before you look at our featured certifications in detail, consider their popularity with employers. The results of an informal job search conducted on several high-traffic job boards show which database certifications employers look for when hiring employees. Though these results vary from day to day (and job board to job board), such numbers do provide a useful perspective on database certification demand. Job Board Search Results (in Alphabetical Order by Certification)* Certification SimplyHired Indeed LinkedIn Jobs LinkUp Total IBM Certified Database Administrator - DB2 428 475 284 221 1,408 Microsoft SQL Server database certifications** 5,447 6,525 8,984 3,522 24,478 Oracle Certified Professional, MySQL Database Administrator 432 534 50 200 1,216 Oracle Database 12c Administrator 217 241 33 176 667 SAP HANA 88 82 12 43 225 *See our complete methodology for selecting top five certifications in the "Best Certifications" series. **Combined totals for MCSA: SQL Database Administration (540), MCSA: SQL Database Development (569), MCSE: Data Management and Analytics (640) and MTA: Database (503). If the sheer number of available database-related positions isn't enough motivation to pursue a certification, consider average salaries for database administrators. SimplyHired reports $86,861 as the national average in the U.S., in a range from $59,696 to over $126,000. Glassdoor's average is somewhat higher – $93,164 – with a top rung right around $123,000. Now let's look at the details of our top five database certification picks for 2019. 2. IBM Certified Database Administrator - DB2 IBM is considered one of the leaders in the worldwide database market, according to an article on Gartner. The company's database portfolio includes the industry standard DB2 as well as IBM Compose, its Information Management System (IMS), lnformix, Cloudant and IBM Open Platform (Hadoop). IBM also has a long-standing and well-populated IT certification program, which has been around for more than 30 years and encompasses hundreds of individual credentials. One of the company's major certification categories is called IBM Analytics, which includes a range of database credentials: Database Associate, Database Administrator, System Administrator, Application Developer and more. It's a big and complex certification space, but one where particular platform allegiances are likely to guide readers straight to the handful of items that are probably relevant to their interests and needs. Database professionals who support DB2 (or aspire to) on Linux, Unix or Windows should check out the IBM Certified Database Administrator - DB2. It's an intermediate-level credential that addresses routine administration, basic SQL, and creation of databases and database objects as well as server management, monitoring, availability, and security. This certification requires candidates to pass two exams. Training is recommended but not required. IBM Certified Database Administrator - DB2 Facts & Figures Certification Name IBM Certified Database Administrator - DB2 11.1 (Linux, UNIX and Windows) Prerequisites & Required Courses None requiredRecommended courses available Number of Exams Two exams:IBM DB2 11.1 DBA for LUW (exam C2090-600) (60 questions, 90 minutes) PLUS DB2 10.5 Fundamentals for LUW (exam C2090-615) (62 questions, 90 minutes) OR DB2 11.1 Fundamentals for LUW (exam C2090-616) (63 questions, 90 minutes) Cost per Exam $200 (or local currency equivalent) per exam ($400 total). Sign up for exams at Pearson VUE. URL https://www.ibm.com/certify/cert?id=08002109 Self-Study Materials Each exam webpage provides exam objectives, suggested training courses and links to study guides for sale through MC Press Publications. Click the Exam Preparation tab for detailed information. Also, visit the Prepare for Your Certification Exam webpage. More: IBM Certifications & Career Paths 3. Microsoft SQL Server Database Certifications According to Gartner's piece, Microsoft's SQL Server platform bumped Oracle this year to earn the top place in DBMS market share, and it ranks third in overall database engine popularity as of August 2018. SQL Server offers a broad range of tools and add-ons for business intelligence, data warehousing and data-driven applications of all kinds. That probably explains why Microsoft offers database-related credentials at every level of its certification program, from the Microsoft Technology Associate (MTA) all the way to the Microsoft Certified Solutions Expert (MCSE) program. In September 2016, Microsoft announced significant changes to its certification program, adding five new certifications to the MCSE and Microsoft Certified Solutions Developer (MCSD) programs alone. These certifications are designed to support Windows Server 2016 and Microsoft SQL Server 2016, among other technologies. For database administrators, the new MCSE: Data Management and Analytics may be of most interest, which you'll learn about later in this section. Learn Microsoft SQL and DataBase concepts from scratch on Udemy MTA The MTA program includes a single database-related exam: Database Fundamentals (98-364). This credential is ideal for students or as an entry-level cert for professionals looking to segue into database support. MCSA Microsoft offers several SQL-related credentials at the Microsoft Certified Solutions Associate (MCSA) level: MCSA: SQL Server 2012/2014 (three exams) MCSA: SQL 2016 BI Development (two exams) MCSA: SQL 2016 Database Administration (two exams) MCSA: SQL 2016 Database Development (two exams) MCSE At the Microsoft MCSE level, there is one SQL database credential: Data Management and Analytics. This certification requires an MCSA as a prerequisite (list of valid items follows in table) and then passing one elective exam. Microsoft SQL Server Database Certification Facts & Figures Certification Name MTA DatabaseMCSA: SQL Server 2012/2014MCSA: SQL 2016 BI DevelopmentMCSA: SQL 2016 Database AdministrationMCSA: SQL 2016 Database DevelopmentMCSE: Data Management and Analytics Prerequisites & Required Courses No prerequisites for:MTA DatabaseMCSA: SQL Server 2012/2014MCSA: SQL 2016 BI DevelopmentMCSA: SQL 2016 Database AdministrationMCSA: SQL 2016 Database Development MCSE Data Management and Analytics prerequisite (only one required):MCSA: SQL Server 2012/2014MCSA: SQL 2016 BI DevelopmentMCSA: SQL 2016 Database AdministrationMCSA: SQL 2016 Database DevelopmentMCSA: Machine LearningMCSA: BI ReportingMCSA: Data Engineering with Azure Training courses available and recommended for all certifications but not required. Number of Exams MTA: One exam, Database Fundamentals (98-364) MCSA: SQL Server: Three exams:Querying Microsoft SQL Server 2012/2014 (70-461)Administering Microsoft SQL Server 2012/2014 Databases (70-462) Implementing a Data Warehouse with Microsoft SQL Server 2012/2014 (70-463) MCSA: SQL 2016 BI Development: Two exams:Implementing a SQL Data Warehouse (70-767)Developing SQL Data Models (70-768) MCSA: SQL 2016 Database Administration: Two exams:Administering a SQL Database Infrastructure (70-764)Provisioning SQL Databases (70-765) MCSA: SQL 2016 Database Development: Two exams:Querying Data with Transact-SQL (70-761)Developing SQL Databases (70-762) MCSE: Data Management and Analytics: One exam:Designing and Implementing Cloud Data Platform Solutions (70-473)Designing and Implementing Big Data Analytics Solutions (70-475)Developing Microsoft SQL Server Databases (70-464)Designing Database Solutions for Microsoft SQL Server (70-465)Implementing Data Models and Reports with Microsoft SQL Server (70-466)Designing Business Intelligence Solutions with Microsoft SQL Server (70-467)Developing SQL Databases (70-762)Implementing a Data Warehouse Using SQL (70-767)Developing SQL Data Models (70-768)Analyzing Big Data with Microsoft R (70-773)Perform Cloud Data Science with Azure Machine Learning (70-774)Perform Data Engineering on Microsoft Azure HDInsight (70-775) Implementing Microsoft Azure Cosmos DB Solutions (Beta) (70-777) All exams administered by Pearson VUE. Cost per Exam MTA: $127 (or equivalent in local currency outside the USA)MCSA/MCSE: $165 (or equivalent) per exam URL www.microsoft.com/learning/en-us/certification-overview.aspx Self-Study Materials Microsoft offers one of the world's largest and best-known IT certification programs, so the MTA, MCSA and MCSE certs are well-supported with books, study guides, study groups, practice tests and other materials. More: Microsoft Certifications & Career Paths 4. Oracle Certified Professional, MySQL 5.7 Database Administrator Oracle runs its certifications under the auspices of Oracle University. The Oracle Database Certifications page lists separate tracks for Database Application Development (SQL and PL/SQL), MySQL (Database Administration and Developer) and Oracle Database (versions 12c, 12c R2, and 11g, and Oracle Spatial 11g). MySQL is perhaps the leading open-source relational database management system (RDBMS). Since acquiring Sun Microsystems in 2010 (which had previously acquired MySQL AB), Oracle has rolled out a paid version of MySQL and developed certifications to support the product. A candidate interested in pursuing an Oracle MySQL certification can choose between MySQL Database Administration or MySQL Developer. The Oracle Certified Professional – MySQL 5.7 Database Administrator (OCP) – credential recognizes professionals who can install, optimize and monitor MySQL Server, configure replication, apply security, and schedule and validate database backups. The certification requires candidates to pass a single exam (the same exam can be taken to upgrade a prior certification). Oracle recommends training and on-the-job experience before taking the exam. Oracle Certified Professional, MySQL 5.7 Database Administrator Facts & Figures More: Oracle Certifications & Career Paths 5. Oracle Database 12c Administrator Most Oracle DBMS credentials require candidates to attend authorized training classes to qualify for the related exam, but MySQL (and Sun-derived) credentials often do not. Oracle certifications also represent a true ladder, in that it is generally necessary to earn the associate-level credentials first, professional-level credentials second and master-level credentials third, culminating at the expert level. Oracle Database 12c R2 is the latest Oracle database version, which includes enhancements to Oracle Database 12c. Currently, Oracle 12c certifications are offered at the associate, professional and master levels. A Foundations Junior Associate certification (novice level) is also available for Oracle Database 12c, as are three specialist designations – the Implementation Specialist, the Oracle Database Performance and Tuning 2015 Certified Implementation Specialist, and the Oracle Real Application Clusters 12c Certified Implementation Specialist. Expert-level credentials that are available include the Oracle Certified Expert, Oracle Database 12c: RAC and Grid Infrastructure Administrator, Oracle Database 12c Maximum Availability Certified Expert, Oracle Certified Expert, Oracle Database 12c: Data Guard Administrator, the Oracle Certified Expert, and the Oracle Database 12c: Performance Management and Tuning. Oracle offers two 12c R2 certifications: Oracle Database 12c R2 Administration Certified Associate and Professional. Oracle 11g certifications are still offered as well. Note: Although premium support for Oracle 11g Database ended on Dec. 31, 2014, extended support is until December 2020, so it's probable Oracle Database 11g will remain in use for the next few years. We focus on requirements for Oracle 12c and 12c R2 Database certifications. One important consideration is that Oracle 11g is forward-compatible with Oracle 12c, but Oracle 12c is not backward- compatible with the prior version. Because Oracle 12c is a newer version, IT professionals possessing Oracle 11g certifications should explore upgrades to those credentials. Oracle Database 12c and 12c R2 Administrator Facts & Figures Certification Name Oracle Database 12c Administrator Certified Associate (OCA 12c)Oracle Database 12c Administrator Certified Professional (OCP 12c)Oracle Database 12c Administrator Certified Master Certification (OCM 12c)Oracle Database 12c Maximum Availability Certified MasterOracle Database 12c R2 Administration Certified Associate (OCA 12c R2)Oracle Database 12c R2 Administration Certified Professional (OCP 12c R2) upgrade Prerequisites & Required Courses OCA 12c: Training recommended but not required OCP 12c: OCA 12c credential, one training course required, complete course submission form OCM 12c: OCP 12c or 12cR2 credential, two advanced training courses (must be different than the course used to achieve the OCP), complete course submission form, submit Fulfillment Kit Request Oracle Database 12c Maximum Availability Certified Master: Three credentials:Oracle Database12c Administrator Certified MasterOracle Certified Expert, Oracle Database 12c: RAC and Grid Infrastructure AdministrationOracle Certified Expert, Oracle Database 12c: Data Guard Administration OCA 12c R2: OCA Database SQL, OCA 11g, OCA 12c or 12c SQL Fundamentals OCP 12c R2: OCA 12cR2 credential, complete required training course, complete the course submission form. Oracle Training: Classes typically run two to five days; costs vary between $1,360 to over $5,580 Number of Exams OCA 12c: Two examsChoose one exam from the following: Oracle Database 12c SQL (1Z0-071) (73 questions, 100 minutes) OR Oracle Database 12c: SQL Fundamentals (1Z0-061) (75 questions, 120 minutes) PLUS Oracle Database 12c: Installation and Administration (1Z0-062) (67 questions, 120 minutes) OCP 12c: One exam: Oracle Database 12c: Advanced Administration (1Z0-063) (80 questions, 120 minutes)OCM 12c: One exam: Oracle Database 12c Certified Master (12COCM), a two-day, performance-based exam Oracle Database 12c Maximum Availability Certified Master: NoneOCA 12c R2: One exam: Oracle Database 12cR2 Administration (1Z0-072) (70 questions, 90 minutes)OCP 12c R2: One exam: Oracle DBA 12cR2 Advanced Administration (1Z0-073) (70 questions, 100 minutes) Cost per Exam OCA 12c: 1Z0-061 costs $125; 1Z0-071 and 1Z0-062 cost $245 each OCP 12c: 1Z0-063 costs $245 OCM 12c: 12COCM costs $2,584; contact Oracle for pricing/availability of upgrade exam Oracle Database 12c Maximum Availability Certified Master: None OCA 12c R2: 1Z0-072 costs $245 OCP 12c R2: 1Z0-073 costs $245 Note: Prices vary by geography URL https://education.oracle.com/pls/web_prod-plq-dad/ou_product_category.getFamilyPage?p_family_id=32&p_mode=Certification Self-Study Materials Each Oracle certification exam webpage lists exam topics as well as recommended training courses, seminars and practice tests. A variety of self-study guides are available on Amazon. Oracle Database certification candidates benefit from student manuals, labs and software provided as part of class offerings. More: Oracle Certifications & Career Paths 6. SAP HANA: SAP Certified Technology Associate - SAP HANA (Edition 2016) SAP SE (SAP) has a large portfolio of business application and analytics software, including cloud infrastructure, applications, and storage. The foundation of the SAP HANA platform is an enterprise-grade relational database management system, which can be run as an appliance on premises or in the cloud. The cloud platform enables customers to build and run applications and services based on SAP HANA. SAP offers a large certification program, built to support its various platforms and products. We chose to feature the SAP Certified Technology Associate - SAP HANA cert, because it is closely aligned with other certifications in this article and because of employer demand. This certification ensures that database professionals can install, manage, monitor, migrate and troubleshoot SAP HANA systems, which covers managing users and authorization, applying security, and ensuring high availability and disaster recovery techniques. SAP recommends that certification candidates get hands-on practice through training or on-the-job experience before attempting this exam. The SAP Learning Hub is a subscription service that gives access to a library of learning materials, including e-learning courses and course handbooks. A free trial is available for first-time users; the annual subscription rate for individual users is about $300. Typically, SAP certifications achieved on one of the two most recent SAP solutions are considered current and valid. SAP contacts professionals whose certifications are nearing end of life and provides information on maintaining their credentials. SAP HANA Facts & Figures Certification Name SAP Certified Technology Associate - SAP HANA (Edition 2016) Prerequisites & Required Courses None required Recommended: SAP HANA Installation & Operations SPS12 (HA200) course, $3,750 Number of Exams One exam: SAP Certified Application Associate - SAP HANA (Edition 2016), exam code C_HANATEC_12, (80 questions, 180 minutes) Cost per Exam $500. Purchase exam voucher through SAP. Exam administered by SAP Education organization centers and Pearson VUE. URL https://training.sap.com/certification/c_hanatec_12-sap-certified-technology-associate---sap-hana-edition-2016-g/ Self-Study Materials The certification webpage includes a link to sample questions. SAP HANA trade books and certification guides are available on Amazon. The SAP Help Center offers product documentation and a training and certification FAQ. The SAP Learning Hub (available on a subscription basis) provides access to online learning content. More: SAP Certifications & Career Paths 7. Beyond the top 5: More database certifications Beyond the items mentioned in this article, other database certification programs are available to further the careers and professional development of IT professionals who work with database management systems. While most colleges with computer programs offer database tracks at the undergraduate, master's and Ph.D. levels, there are few well-known vendor-neutral database certifications. The Institute for the Certification of Computing Professionals (ICCP) is part of this unique group, offering its Certified Data Professional (CDMP). EnterpriseDB administers a small but effective certification program, with two primary certs: the PostgreSQL Associate and the PostgreSQL Professional. PostgreSQL is the No. 4-ranked relational database management system in August 2018 according to DB-Engines. Credentials from Google, MarkLogic, Teradata and SAS may also be worth pondering. However, such niches in the database certification arena are generally only worth pursuing if you already work with such platforms or plan to work for an outfit that uses them. Database Types & Uses Chapter Exam | killexams.com 1Z0-873 Real Questions and VCE Practice Test Page 1 Question 1 1. How do we know that social media probably makes use of relational databases? Question 2 2. Why is a relational database useful in government intelligence? Question 3 3. What best describes the structure of a relational database? Question 4 4. What, at its core, does a relational database allow? Question 5 5. Which of these would be a logical use for a hierarchical database? Page 2 Question 6 6. What rough shape does a hierarchical database take? Question 7 7. How many parent tables can a child record or table have? Question 8 8. How many child records or tables can a parent table have? Question 9 9. Which of the following statements is false with respect to distributed databases? Question 10 10. What is the primary advantage of using a distributed database? Page 3 Question 11 11. How many people can, in theory, use a multi-user distributed databases? Question 12 12. Where is a multi-user database typically located? Question 13 13. Even though tables aren't related in a flat-file database, they should have a(n) _. Question 14 14. The tables in a flat file database have no _ between them. Question 15 15. I have a flat-file table with seven records for a customer. Her name changes. How do I update the data? Page 4 Question 16 16. _ is an example of a flat-file database tool. Question 17 17. In a database index, a record contains: Question 18 18. What types of search queries are best done with a R- tree database index? Question 19 19. Where is information stored in a clustered index? Question 20 20. What is the main purpose of a database index? Page 5 Question 21 21. _ is a field in a database table (or a combination of fields) that has a unique value. Question 22 22. A relationship between two or more tables is also known as: Question 23 23. _ refers to how many records in a table are related to the number of records in another table. Question 24 24. A field in a database table whose values are the same as the primary key of another table is called: Question 25 25. What is the basic relationship in a hierarchical database? Page 6 Question 26 26. How many tables are in a given hierarchical database? Question 27 27. Which of these is most like a hierarchical database? Question 28 28. Which of these could use a hierarchical database most efficiently? Question 29 29. What would a company most likely use a relational database for? Question 30 30. Ultimately, what is at the 'top' of a hierarchical database? Database Types & Uses Chapter Exam Instructions Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck! Why US Police Are Out of Control | killexams.com 1Z0-873 Real Questions and VCE Practice Test Exclusive: U.S. police forces are so out of control there’s not even a reliable database on how many times police officers shoot citizens. So, beyond racism and fear of guns, the problem includes fragmentation in law enforcement and gaps in training among the 18,000 police agencies in the 50 states, notes Daniel Lazare. By Daniel Lazare America is clearly an outlier when it comes to police brutality. According to The Guardian’s highly useful “Counted” website, U.S. police kill more people in a typical day than police in England and Wales kill in an entire year. Where police in Stockton, California, killed three people in the first five months of 2015, police in Iceland, which has roughly the same population, have killed just one person since the modern Icelandic republic was founded in 1944. Where the U.S. saw 97 police shootings in a single month (March 2015), Australia saw 94 over the course of two decades (1992 to 2011). And where police in Finland fired a grand total of six bullets in 2013, police in Pasco, Washington, pumped nearly three times as many last February into a 35-year-old Mexican immigrant named Antonio Zambrano-Montes whom they accused of threatening them with a rock. A screen-shot from a video showing Walter Scott being shot in the back by a North Charleston, South Carolina, police officer Michael Slager on April 4, 2015. (Video via the New York Times.) A screen-shot from a video showing Walter Scott being shot in the back by a North Charleston, South Carolina, police officer Michael Slager on April 4, 2015. (Video via the New York Times.) A screen-shot from a video showing Walter Scott being shot in the back by a North Charleston, South Carolina, police officer Michael Slager on April 4, 2015. (Video via the New York Times.) What is the reason for vast discrepancy? The Black Lives Matter movement blames racism, which is certainly true as far as it goes, but potentially misleading since its suggests that racism is not a problem in countries like England and Australia, which is definitely not the case. In a recent analysis, Alternet’s Steven Rosenfeld blamed police reliance on excessive force, an absence of supervision, and a confrontation mentality that leads urban cops to see their beats as veritable war zones. While this is certainly the case, the logic is more than a bit tautological since all Rosenfeld is saying is that police are out of control because police are out of control. The Coalition to Stop Gun Violence blames a “continuing arms race between law enforcement and civilians” that causes cops to see every suspect as a heavily-armed combatant. But while the police are plainly upping their firepower SWAT teams are often more heavily armed than front-line troops in Afghanistan or Iraq there is no evidence that the average American is following suit. Indeed, Gallup reports that the proportion of Americans who say they have a gun at home has declined since the 1960s, while sales of military-style assault weapons have so far had a negligible impact on crime rates. So there is no evidence that a street-level arms race is underway or that it is causing police to over-react. Fragmentation of Police Forces So what is the real reason that America is off the charts when it comes to police shootings? The most important explanation is one that almost no one notices: fragmentation. Britain, for example, has some 50-odd separate police forces, the Metropolitan Police Service covering greater London, a slew of regional police forces covering the rest of the country, plus a Serious Organized Crime Agency to deal with higher-level offenses. Germany has a federal police force plus one police department for each of the sixteen länder, or states, while France, thanks to the Jacobin tradition of centralization, somehow makes do with just three police forces in all: the National Police, the National Gendarmerie, and the Municipal Police, only half of whom are armed. Australia meanwhile has eight police forces, New Zealand has just one, while Canada, somewhat unusually, has more than 200, including two dozen or more among Native American tribes. So how many police departments does the United States have? The answer: more than 18,000. This includes three dozen or so at the federal level plus a staggering 17,985 at the state and local level everything from state troopers and city patrolmen to campus cops, hospital and housing police, park rangers, and even a special department of zoo police in the town the Brookfield just outside of Chicago. Where Britain’s police forces are firmly under the control of the Home Office while France’s are under the Ministry of the Interior, moreover, America’s are virtually autonomous. When the Justice Department sent out a survey on the use of force in 2013, the answers that came back were so jumbled as to be well nigh useless. Some departments sent back information on the use of guns, while others included reports about punches thrown and the use of non-lethal devices such as beanbag guns. Others, including such big-city departments as New York, Houston, Baltimore and Detroit, either did not know or refused to say. A country that doesn’t even know how many times police fire their weapons or under what circumstances is one in which every local department is a law unto itself, a self-contained barony with its own special rules and customs. “It’s a national embarrassment,” Geoffrey P. Alpert, a University of South Carolina criminology professor, told The New York Times. “Right now, all you know is what gets on YouTube.” What does a lack of knowledge have to do with ultra-high levels of brutality? The answer is simple: absence of knowledge means an absence of control, which means that local departments behave with relative impunity. If local cops seem out of control, it’s because the only controls come from local politicians who are often corrupt and racist and therefore tolerant of such behavior on the part of the officers they employ. The Sandra Bland Case Just what this means became clear on July 10 when a 28-year-old Chicagoan named Sandra Bland found herself pulled over by a traffic cop in Waller County, Texas, about 50 miles northwest of Houston. As a graduate of nearby Prairie View A&M, a historically black university, Bland knew how small-town police in rural Texas operate. So she was angry, upset and prepared for the worst. “You seem very irritated,” Police Officer Brian Encinia told her. To which Bland replied: “I am, I really am. I was getting out of your way. You were speeding up, tailing me, so I move over and you stop me. So, yeah, I am a little irritated, but that doesn’t stop you from giving me a ticket.” Bland had a point. When Encinia pulled up close behind her, she did the natural thing by moving over to let him pass. Yet now she found herself pulled over for a technical infraction, i.e. changing lanes without signaling. Encinia’s aggressive driving triggered the incident in the first place, and now his aggressive behavior was upping the ante. As the argument escalated, Bland found herself thrown to the ground, cuffed and then tossed in jail when she failed to make bail. Three days later, she was found dead in her cell. This is how a feudal knight behaves, not, supposedly, a modern cop in a democratic society. Encinia was suspended, the FBI stepped in, while the local DA launched an investigation to determine if Bland was the victim of a homicide. But this was only after dash cam footage showing Encinia’s confrontational behavior went viral on the Internet and protesters rallied to her cause. Otherwise, the incident would have been gone unnoticed. The killing of Samuel DuBose six days later showed another side of the problem. DuBose was not the victim of an over-aggressive small-town policeman, but of a campus cop from the University of Cincinnati. Normally, the biggest problems campus police face are rowdy frat-house parties and overflowing parking lots on graduation day. But in this case, the university, concerned about mounting crime, had entered into an agreement with the city to allow its police to patrol nearby neighborhoods. For a hapless local motorist like DuBose, the upshot was that instead of dealing with a police department accountable in some fashion to the voters of Cincinnati, he now found himself face to face with an officer answerable only to a university board of trustees, all appointees. Control wound up scrambled, accountability was slashed, while an ill-prepared cop was thrust into a situation for which he was not properly trained. As a consequence, a minor traffic stop ended with DuBose’s death. Once again, the local DA went into overdrive. County prosecutor Joe Deters slammed Officer Ray Tensing for making a “chicken crap stop,” dismissing his account as “nonsense” and describing DuBose’s shooting as “the most asinine act I’ve ever seen a police officer make.” “This is without question a murder,” he added. Loss of Accountability But not only was this also after the fact, but the effect was to sidestep the issue of why the city had had shunted off policing to a body far removed from voters’ control. Responsibility rested not only with Tensing, but with the city officials who entered into such an undemocratic arrangement. So, once again, it was a case of ineffective controls and a lack of accountability allowing police brutality to flourish. If the Black Lives Matter movement had not been in high gear by that point, DuBose’s death would almost certainly have been overlooked as well. But while emotions ran high, awareness of the basic structural issues at hand was nil. This strange contradiction outrage on one hand and utter passivity with regard to the larger political issues on the other begs two questions: why has fragmentation become so massive, and why is it all but invisible? The first is easy. The problem goes back to the deal that America’s so-called Framers struck in Philadelphia in 1787 in which they not only divided power among three branches of government, but also between the federal government and the states. While the former wound up with the ability to tax, borrow, regulate commerce, and coin money, the latter gained an all but unchallengeable monopoly on local governance. Things have gotten a bit more complicated since then thanks to the civil liberties movement, the New Deal, the civil rights revolution, and other such events. But to a remarkable degree, the original division of responsibility still holds. While the feds intervene from time to time in urban policy, they do so obliquely while local prerogatives remain sacrosanct. Much as Congress carved states out of the western territories, the states gained carte blanche not only to create as many police departments as they wish, but to carve out an endless number of municipalities and school districts as well, not to mention water and sewer boards, mosquito control commissions, and other exotic flora and fauna. The upshot is not only 18,000 police departments but more than 90,000 local governments in all, all autonomous, self-governing, and endlessly jealous of their rights and prerogatives. “[I]f there was a dominant ‘originalist’ notion of how the nation’s governance should work,” notes a prominent investigative reporter, “it was pragmatism; it was pulling together to get done what needed to be done” (Robert Parry, America’s Stolen Narrative, pp. 32-33). But leaving aside the fact that pragmatism is far from a simple concept the Stanford Encyclopedia of Philosophy entry on the subject runs to more than 10,000 words it is difficult to see how such an ornate arrangement can be described as pragmatic when there is no way to determine whether it is still working or what “working” in this context even means. Does San Diego County (population 3.1 million), to cite just one example, really need 65 separate fire departments? Does New Jersey (population 8.7 million) really need 565 municipalities and 591 school districts? Couldn’t the same tasks be accomplished more cheaply and efficiently if local government was consolidated? The same goes for the police. Does America really need 18,000 police departments? Couldn’t the same tasks be conducted more efficiently and fairly if the departments were consolidated and placed firmly under federal control? Fear of Centralism Conservatives will reply that any such nationalization would be tyrannical and that local prerogatives like these are the essence of American liberty. But just as liberty for the pike means death for the minnow, liberty for local pols in Waller County meant the opposite for Sandra Bland. Americans went to war in 1776 because the British were “erect[ing] a multitude of New Offices, and sen[ding] hither swarms of Officers to harass our people and eat out their substance.” But with their 90,000 local governments, Americans have wound up saddling themselves with more local officials than George III could ever have imagined. It’s a system crying for rationalization and reform. But this leads to the second question: how is it that no one notices? Where other countries fiddle with municipal governance as a matter of routine, abolishing some jurisdictions, creating others, and constantly re-adjusting powers and responsibilities, the very idea remains unthinkable in the U.S. So what is the reason? The answer has to do with what one might call the dark side of pragmatism. If American governance rests on the dual principles of practicality and workability, then it follows that there is no point discussing a reform if it is not remotely in the cards. Indeed, there’s no point thinking about the problem in the first place or even noticing that it exists. The absurdity of 18,000 autonomous police departments should be apparent to all, yet, for even the most ardent civil-rights campaigner, it disappears from view. So do other strange aspects of the U.S. constitutional system a Senate that gives the same number of votes to Wyoming (population 576,000) that it does to a multi-racial giant like California (population 38 million); an electoral college that triples the weight of certain lily-white “rotten boroughs” (as under-populated electoral districts were known in Eighteenth-Century England), or a two-thirds/three-fourths amending clause that, thanks to growing population discrepancies, allows 13 largely rural states representing as little as 4.1 percent of the population to veto any constitutional change sought by the remaining 95.9. Rather than the elephants in the sitting room that no one wishes to discuss, these are elephants that no one even notices. Which brings us back to race. Although civil libertarians celebrate America’s 228-year-old constitutional system on the grounds that it locks in the Bill of Rights, the consequences are not remotely democratic. To the contrary, the effect is not only to fragment power from above, but, more importantly, to muffle and disperse democratic political power from below by placing countless obstacles in its path. As a result, racism is allowed to fester in countless nooks and crannies in America’s over-complicated political structure. The disease thus spreads, infecting one organ after another. For protesters, the consequence is a curious mix of anger and complacency. Young people take to the streets in response to the latest outrage. They march and chant as they challenge the powers-that-be. But then the fury wanes, and everyone goes back home. With gyroscopic efficiency, the system rights itself and fragmentation continues unabated. If you want a picture of the future, to paraphrase Orwell, imagine an endless succession of Sandra Blands hanging in their cell forever. Daniel Lazare is the author of several books including The Frozen Republic: How the Constitution Is Paralyzing Democracy (Harcourt Brace). image_pdf image_pdf image_print image_print Direct Download of over 5500 Certification Exams References : Dropmark : http://killexams.dropmark.com/367904/11982529 Dropmark-Text : http://killexams.dropmark.com/367904/12914464 Blogspot : http://killexamsbraindump.blogspot.com/2018/01/real-1z0-873-questions-that-appeared-in.html Wordpress : https://wp.me/p7SJ6L-2rJ Box.net : https://app.box.com/s/kr6bqfyo3d01tnobhr4lqszu1yrlmltg


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Killexams Certification Exam Questions and Answers and Study Notes
Killexams Exam Study Notes, study guides, QA
Killexams Exam Study Notes
Killexams Certification Exam Study Notes
Killexams Certification Exam Study Notes
Killexams Certification Exam Study Notes
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