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SQL Procedures, Triggers, and Functions on IBM DB2 for i by Simona Pacchiarini, Tom Mckinley, Doug Mack, Jim Denton, Dan Cruikshank, Mike Cain, Rob Bestgen, Hernando Bedoya, Jim Bainbridge

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Introduction to SQL Persistent Stored Module
This chapter describes the Structured Query Language (SQL) that is used to define and maintain persistent database language modules. It also describes how to invoke them by calling procedures, invoking functions, or attaching triggers.
You can use the support for Persistent Stored Modules (PSM) in IBM DB2 for i to write routines that use the SQL language that is based on the American National Standards ...

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