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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A clause used in SQL SELECT statements to sort query results.
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used to count the number of rows.
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Database restoring refers to the concept of restore a database from a backup or a copy.
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High-availability technologies mask the effects of hardware or software failure, so that perceived downtime for users and applications is minimized.
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a relational database-as-a-service from Microsoft. This tag is for questions about Azure SQL Database, not SQL Server hosted in an Azure VM.
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In the context of a database, maintenance describes routine operational tasks around a database system, such as monitoring, tuning and backup procedures.
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a general-purpose, managed, garbage-collected, object-oriented programming language created by Microsoft.
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the default procedural language for the PostgreSQL database system. Questions about PL/pgSQL should probably be tagged "PostgreSQL" as well.
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an object-oriented language and runtime environment. Java programs can run unchanged on most platforms in a Virtual Machine called the JVM.
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Command-Line Utility Program for Oracle
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A type of index mostly used in SQL-Server, which aligns the data of a table with the index.
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the concept of moving services from one host or node to another in order to provide high availability in a computing system.
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represent missing, unknown or inapplicable data.
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Performance tuning done by adjusting database parameters or physical layout of the database.
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Can refer to disks in a RAID-1 configuration, or low-latency database replication strategies.
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part of MS SQL Server. It's a system database that functions as a storage area for temporary tables, internal objects and row versions.
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A commonly used name for Microsoft SQL Server Reporting Services (SSRS), a web based reporting tool bundled with Microsoft SQL Server.
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an Oracle command line tool for doing backup, restore, and recovery operations.
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For questions about the persistent storage of database data.
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PostgreSQL 9.4 : 2014 release of PostgreSQL
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a set of rules that determine how data is sorted and compared for comparing characters in a character set.
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Transferring log records from a source database system to one or more destination systems.
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A tool that reads and analyses event trace information from a database management system.
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An ongong check of various statistics and events, which can be used to spot telltale signs of underlying issues.
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Data corruption refers to errors in computer data that occur during writing, reading, storage, transmission, or processing, which introduce unintended changes to the original data
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Database administrator
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A range of RDBMS and BI products from Sybase Corporation, distantly related to MS SQL Server. Their RDBMS offerings span the full range from an enterprise-grade "big iron" RDBMS down to a lightweight …
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The conversion of data into a form that cannot be easily understood by unauthorized users.
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For questions about issues arising when multiple users or processes concurrently access or modify shared information in a database system.
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a graphical administration and development tool for PostgreSQL.
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The PIVOT syntax converts row data into columnar data, and vice versa for the UNPIVOT syntax. Not all databases support the PIVOT syntax but the functionality can be implemented, often using decision …