ISO/IEC 9075-4

Description / Abstract: This part of International Standard ISO/IEC 9075 specifies the syntax and semantics of a database language for declaring and maintaining persistent database language routines in SQL-server modules. The database language for externally-invoked procedures and SQL-invoked routines includes:

— The specification of statements to direct the flow of control.

— The assignment of the result of expressions to variables and parameters.

— The specification of condition handlers that allow SQL-invoked routines to deal with various conditions that arise during their execution.

— The specification of statements to signal and resignal conditions.

— The declaration of standing SQL-server cursors.

— The declaration of local variables.

It also includes the definition of the Information Schema tables that contain schema information pertaining to SQL-server modules and SQL-invoked routines.