标准编号：ISO/IEC 9075-4:2011
中文名称：信息技术 数据库语言 SQL 第4部分：持久存储模块（SQL/PSM）
英文名称：Information technology — Database languages — SQL — Part 4: Persistent Stored Modules (SQL/PSM)
发布日期：2011-12
标准范围
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 procedure)s and (SQL-invoked routine)s 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.
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