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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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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A pivot (or crosstab) converts row data into columnar data, and vice versa for an unpivot. Not all databases support explicit PIVOT syntax but the functionality can be implemented, often using decisio…
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The process and means of extracting data from a database for use elsewhere.
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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 scheduled task managed by the database, for example using SQL Server Agent, Oracle dbms_job, or MySQL Event Scheduler.
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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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A sequential journal of database write operations that facilitates robust atomic write operations.
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alter an existing table object.
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a general-purpose, managed, garbage-collected, object-oriented programming language created by Microsoft.
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Establishing a connection to a database or database server.
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A type of replication in SQL Server in which Publishers and Subscribers can work autonomously and later reconnect, synchronize, and merge data changes to achieve convergence among all nodes in the top…
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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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a free tool for SQL & PL/SQL development and reporting similar to Quest's Toad or Allround Automations' PL/SQL Developer.
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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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Transferring log records from a source database system to one or more destination systems.
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Command-Line Utility Program for Oracle
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represent missing, unknown or inapplicable data.
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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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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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for questions specific to data types that contain both date and time parts.
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an Oracle command line tool for doing backup, restore, and recovery operations.
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a task-based command-line shell and scripting language designed especially for automation of Windows tasks. It has become the defacto CLI for Microsoft products since the its re…
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Constructing a query at runtime with string concatenation operations and executing the query from that string.
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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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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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'Extract, Transform and Load': Data load processing, normally in the context of data warehouse systems.
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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 the persistent storage of database data.
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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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Entity Relationship Diagram