The focus of this chapter was to highlight important DB2 application development features that are not part of the SQL PL language, but are frequently employed in DB2 application objects to improve performance and simplify SQL PL application development.

You saw how advanced SQL can be used to access internal transition tables by combining SELECTs with INSERT, UPDATE, and DELETE, and how MERGE can simplify the task of merging data from two tables. The concept of declared global temporary tables was introduced, as well as a lesser known technique for sharing temporary tables between the application and other procedures. Save points can be employed to partially rollback transactions. Finally, an example of how to encapsulate sequence objects was presented for applications that want to maintain a high degree of database independence.

    DB2 SQL PL. Deployment and Advanced Configuration Essential Guide for DB2 UDB on Linux., UNIX, Windows, i5. OS, z. OS
    Intelligent Enterprises of the 21st Century
    ISBN: N/A
    EAN: 2147483647
    Year: 2003
    Pages: 205 © 2008-2017.
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