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This Week @ the MC Press Bookstore

January 2, 2013 | Volume 12 Issue 1

ISSUE HIGHLIGHTS

TOP STORY: Practical RPG: Flexible Parameters, Part 1
FEATURED ARTICLE: Simplified Management of SQL Procedures and Functions
NEWS HIGHLIGHT: Help/Systems, IBM i Software Provider, Celebrates 30 Years
FORUM: CGIDEV2 News
MC STORE: Top 10 Best-Selling Titles 
EVENT: IBM i Encryption Made Easy with DB2 Field Procedures
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Feature Article - Programming
 
Practical RPG: Flexible Parameters, Part 1

As we write more modular code, flexible parameter passing becomes ever more important, and this is the first article to address the nuances of the subject.

joe plutaWritten by Joe Pluta

In order for two programs to communicate, they have to pass data. For most non-trivial applications (other than logging), this is typically a two-way conversation, if only for the called routine to return a completion code. Often, much more information is communicated, and typically this is done through a parameter list. I'm going to walk through a typical parameter list and explain how it works and how to take advantage of some of the built-in features of RPG.


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Feature Article - Programming
 
Simplified Management of SQL Procedures and Functions

The recently announced Technology Refresh #5 for the IBM i 7.1 release includes an enhancement that makes management of SQL stored procedure and function objects easier.

kent milligan 117x117Written by Kent Milligan

SQL procedures and functions have been supported by DB2 for i for many releases. This support enables developers to create procedural SQL objects like the example procedure shown in Figure 1. When the SQL Create Procedure statement in Figure 1 is executed, DB2 for i generates a C program object into the specified library (TESTLIB). The generated C program object gets called whenever an application invokes the TestProc stored procedure.


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