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a relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. It originated from the Sybase SQL Server codebase…
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MySQL : Open-Source, Relational Database Management System
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DO NOT USE this for questions targeting Microsoft SQL Server, use the tag sql-server instead. "SQL" is an acronym for "Structured Query Language", it is used in relational database management systems …
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an enterprise class, open-source, object-relational database management system (ORDBMS) available for all major platforms including Linux, UNIX, Windows and OS X. Please mention your exa…
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a RDBMS (Relational Database Management System) created by Oracle Corporation. It supports a large number of languages and application development frameworks. Its primary languages are SQL, …
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for SQL Server 2008, major build version 10.00.xxxx.
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the process of specifying the logical and/or physical parts of a database. The goal of database design is to make a representation of some "universe of discourse" - the types of fac…
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for SQL Server 2008 R2, major build version 10.50.xxxx
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for SQL Server 2012, major build version 11.00.xxxx.
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An evaluation of whether a system works well enough to be fit for purpose. Normally performance refers to the speed with which a system completes an operation or set of operations over time.
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the process of sharing any level of information so as to ensure consistency between redundant hardware/software resources to improve reliability, fault-tolerance, and accessibility
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for SQL Server 2005, major build version 9.00.xxxx.
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A database structure that can improve the speed of queries at the cost of disk space and slower inserts/updates. It stores a copy of one or more columns but structures the data differently to allow f…
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InnoDB : MySQL's ACID-compliant Storage Engine
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A class of issues where a database executes a query inefficiently due to the optimiser selecting an innapropriate query plan.
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a dialect of SQL used by Microsoft SQL Server and SAP's Sybase.
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The second and terminal release of Oracle Corporations Oracle 11g database product. 11.2 was released for Linux on September 1st, 2009. New features added include RAC One Node, Improved data compress…
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MySQL 5.5 brought many performance enhancements and expanded the feature set of the popular open-source RDBMS.
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Making copies of data which may be restored after a data loss event or to recover data from some earlier point in time.
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The discipline of Operational and Architectural Management of Database Systems.
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a scalable, high-performance, open source, document-oriented database. It supports a large number of languages and application development platforms. Questions about programming should be …
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Callable code installed on a database manager, exposing an API through which it can be invoked. Normally written in the native query language, some DBMS platforms support other languages as well.
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An SQL join clause combines records from two or more tables or views.
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In the context of a database, optimisation refers to the process of the query optimiser selecting an efficient physical execution plan.
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Reloading a database from a backup, typically for disaster recovery, or to make a copy of a database onto another server.
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Procedural code automatically executed in response to a database event.
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Allowing users to access only the data they are authorized to access.
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its structure described in a formal language supported by the database management system (DBMS) and refers to the organization of data to create a blueprint of how a d…
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SQL Server Integration Services, an ETL tool sold by Microsoft and bundled with SQL Server versions since SQL Server 2005.
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A core SQL statement, SELECT retrieves data from one or more tables or other sources of row set data such as views or table-valued functions.
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a relational model database server developed by IBM. It primarily runs on Unix (namely AIX), Linux, IBM i (formerly OS/400), z/OS and Windows servers.
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SQL Server Management Studio, a graphical front-end tool shipped with SQL Server for managing and querying databases. It also supports managing other bundled systems such as SSAS.
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Splitting a database table into multiple segments for performance or manageability.
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A type of integrity constraint used in a RDBMS platform to ensure that a value in a column matches one of a range of key values from another table.
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A widely-used open-source operating system that is particularly popular on servers.
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PostgreSQL 9.3 : 2013 release of PostgreSQL