This document specifies an Information Schema and a Definition Schema that describes the following information.
— The structure and integrity constraints of SQL-data.
— The security and authorization specifications relating to SQL-data.
— The features and subfeatures of the ISO/IEC 9075 series, and the support that each of these has in an SQL-implementation.
— The SQL-implementation information and sizing items of the ISO/IEC 9075 series and the values supported by an SQL-implementation.