ISO/IEC 9075-11:2011
名称 : Information technology — Database languages — SQL — Part 11: Information and Definition Schemas (SQL/Schemata)
ISO/IEC 9075-11:2011 specifies an Information Schema and a Definition Schema that describes the structure and integrity constraints of SQL-data, the security and authorization specifications relating to SQL-data and the features supported by an SQL-implementation together with other sizing information.