The SQL/Schemata, or Information and Definition Schemas, part of the SQL standard is defined by ISO/IEC 9075-11:2008. SQL/Schemata defines the information schema and definition schema, providing a common set of tools to make SQL databases and objects self-describing. These tools include the SQL object identifier^[clarify], structure^[clarify] and integrity constraints, security and authorization specifications^[clarify], features and packages^[clarify] of ISO/IEC 9075, support of features provided by SQL-based DBMS implementations, SQL-based DBMS implementation information and sizing items^[clarify], and the values supported^[clarify] by the DBMS implementations.^[1] SQL/Schemata defines a number of features, some of which are mandatory.

See also

• Data Definition Language (CREATE, ALTER, DROP...)
• SQL:2003 (Introduced SQL/Schemata)
• Data dictionary

References

External links

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