ISO/IEC 9075-11:2016 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.
- The features and subfeatures of ISO/IEC 9075, and the support that each of these has in an SQL-implementation.
- The SQL-implementation information and sizing items of ISO/IEC 9075 and the values supported by an SQL-implementation