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.

Type to find tags:
× 14821
All versions of Microsoft SQL Server (not MySQL). Please also add a version-specific tag like sql-server-2016 if that is relevant to the question.
× 11920
All versions of MySQL (not Microsoft SQL Server). Please also add a version-specific tag like mysql-5.7 if that is relevant to the question.
× 6974
Structured Query Language (SQL). For questions about the language, not Microsoft SQL Server (tag sql-server).
× 5258
All versions of PostgreSQL. Add a version-specific tag like postgresql-9.4 if that context is important.
× 4221
All versions of Oracle. Also add a version-specific tag like oracle-11g-r2 if that context is important in the question.
× 3346
SQL Server 2008 (major build version 10.00.xxxx). Please also tag with sql-server.
× 3172
The logical model and/or physical design of a database.
× 2969
SQL Server 2008 R2 (major build version 10.50.xxxx). Please also tag with sql-server.
× 2805
SQL Server 2012 (major build version 11.00.xxxx). Please also tag sql-server.
× 1919
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.
× 1871
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
× 1519
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…
× 1406
InnoDB : MySQL's ACID-compliant Storage Engine
× 1249
SQL Server 2005 (major build version 9.00.xxxx). Please also tag sql-server.
× 1230
a dialect of SQL used by Microsoft SQL Server and SAP's Sybase.
× 1193
Making copies of data which may be restored after a data loss event or to recover data from some earlier point in time.
× 1191
for questions about improving the performance and/or efficiency of database queries.
× 1054
All versions of MongoDB - a scalable, high-performance, open source, document-oriented database.
× 1002
SQL Server 2014 (major build version 12.0.xxxx). Please also tag sql-server.
× 974
The discipline of Operational and Architectural Management of Database Systems.
× 943
Oracle Database 11g Release 2. Please also tag oracle for search purposes.
× 942
MySQL version 5.5 - please also tag with mysql for search purposes.
× 883
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.
× 798
An SQL join clause combines records from two or more tables or views.
× 789
In the context of a database, optimisation refers to the process of the query optimiser selecting an efficient physical execution plan.
× 718
Privileges granted to an account or role through the security mechanism of an operating system, database manager or other system.
× 709
Reloading a database from a backup, typically for disaster recovery, or to make a copy of a database onto another server.
× 706
Procedural code automatically executed in response to a database event.
× 594
SQL Server Integration Services, an ETL tool sold by Microsoft and bundled with SQL Server versions since SQL Server 2005.
× 573
Allowing users to access only the data they are authorized to access.
× 571
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…
× 524
an open source RDBMS that is designed to be a "drop-in" replacement for MySQL.
× 522
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.
× 509
MySQL version 5.6 - please also tag with mysql for search purposes.
× 501
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.
× 492
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.