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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represent missing, unknown or inapplicable data.
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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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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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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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the default procedural language for the PostgreSQL database system. Questions about PL/pgSQL should probably be tagged "PostgreSQL" as well.
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alter an existing table object.
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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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a general-purpose, managed, garbage-collected, object-oriented programming language created by Microsoft.
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Relational Database Management System, a widely used type of database management system characterised by its extensive use of joining as a core operational principle.
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a cloud-based relational database from Microsoft. It is a different version that traditional SQL Server.
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A tool that reads and analyses event trace information from a database management system.
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Percona : MySQL open source fork with performance improvements
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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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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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a graphical administration and development tool for PostgreSQL.
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an Oracle command line tool for doing backup, restore, and recovery operations.
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Primary interactive terminal for PostgreSQL
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the configuration file for MySQL server, client programs, and utilities.
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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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used to count the number of rows.
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'Extract, Transform and Load': Data load processing, normally in the context of data warehouse systems.
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Database auditing involves observing a database so as to be aware of the actions of database users.
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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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a data infrastructure implementing a framework of geographic data, metadata, users and tools that are interactively connected in order to use spatial data in an …
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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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Microsoft SQL Server Express, a freely downloadable and distributable version of Microsoft's SQL Server relational database management system, comprises a database specifically targeted for embedded a…