Programming in ILE RPG – DDS Database Concepts MC Press Online

​While most recent database objects are created by using SQL, many files are still defined by using DDS. The procedure for creating database file definitions with DDS is similar to that of creating an RPG program. By Brian Meyers and Jim Buck Editor’s Note: This article is excerpted from chapter 3 of Programming in ILE RPG, Fifth Edition. The first step is to use an editor, such as the RDi LPEX editor, to create a source member of definition statements. Most installations use a file named QDDSSRC to store members representing externally described files. The source member type of a physical file member is PF, and the type of a logical file member is LF. The editor automatically provides prompts appropriate to the member type you specify. Read More 

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