A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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The choice of settings for hardware, firmware, software or other components of a database system.
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A cluster consists of a group of computers connected so that in many respects they can be viewed as a single system.
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describe when a `SELECT` statement is used as part of a larger SQL statement. The larger statement may be DML and is always found within brackets or parenthesis.
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a Windows service installed with the SQL Server Standard Edition and above. It provides an automated way of executing or performing administrative task against a SQL Server instanc…
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A catch-all term describing database systems using various non-relational models. Such systems are usually engineered to be high-performance.
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GROUP BY : SQL Aggregation for Common Values
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A popular open-source embeddable (i.e. non client-server) RDBMS implemented as a C library.
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A database system optimised for reporting, particularly in aggregate. Often, but not always implemented using a star schema.
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a web service that makes it easy to set up, operate, and scale a relational database in the cloud.
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Specifies the type of data being stored (string, date, numeric, etc).
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A declarative mechanism such as a check or foreign key that enforces some data integrity rule in a database.
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SQL Server Reporting Services, a web based reporting tool produced by Microsoft and bundled with SQL Server.
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a desktop and server operating system based on Debian GNU/Linux. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.
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a new feature of SQL Server 2012 that provide continuous data synchronization, automatic failover and secondary read access for one or many SQL Server databases.
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Reconstructing a database.
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SQL Server Analysis Services, an OLAP server bundled with SQL Server by Microsoft since version 7.0
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mysql-5 : Version of MySQL Starting with MySQL 5.0
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Combining multiple data points into a single data point. This usually is used in reference to SQL and usually to an aggregate function of some sort.
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Improving the performance characteristics of a database application or system.
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specifically for PostgreSQL version 9.2
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The strategy selected by the query optimiser to process a query.
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In the database structured query language (SQL), the DELETE statement removes one or more records from a table.
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Upgrade refers to the replacement of a product with a newer version of the same product. - replace (a software program) with a more recently released, enhanced version. - replace (a hardware devic…
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an open source tool written in PHP to handle administration of MySQL over the web. It can perform various tasks such as creating, modifying or deleting databases, tables, fields or rows;…
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Short for 'eXtensible Markup Language.' A textual markup language for transferring structured data.
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A data structure that organizes information into rows and columns.
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A function performs some specified work, usually taking parameters as input. In terms of databases these may be specific to SQL or to the database vendor.
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The automated distribution of transactional changes from a publishing database to one or more subscriber databases.
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PostgreSQL 9.4 : 2014 release of PostgreSQL
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For questions about database backups.
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A clause used in SQL SELECT statements to sort query results.
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Percona : MySQL open source fork with performance improvements
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The process of identifying the party logging into a system.
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The process and means of extracting data from a database for use elsewhere.
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A sequential journal of database write operations that facilitates robust atomic write operations.
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Permissions associated with, or required for, an operation on a database system.