IMS DLIModel Utility

In order for a Java™ application to access an IMS™ database, it needs information about that database. The DLIModel utility allows you to transform your IMS database information (program specification blocks, database descriptions, and COBOL copybooks) into application independent metadata.

In addition to creating metadata, the IMS DLIModel utility also allows you to:

• Generate XML schemas of IMS databases, which are used to retrieve XML data from or store XML data in IMS databases
• Incorporate additional field information from COBOL copybooks
• Incorporate additional PCB, segment, and field information, or override existing information
• Generate a DLIModel report, which is designed to assist Java application programmers in developing applications based on existing IMS database structures
• Generate an optional DLIModel trace log

Two versions of the IMS DLIModel utility are available:

• An IMS-shipped version that runs from System Services or from the z/OS® BPXBATCH utility
• A Web download version that runs as a plug-in to Eclipse, WebSphere Developer for zSeries (WDz), Rational Application Developer (RAD), Rational Developer for System z (RDz)

The IMS-shipped version of the DLIModel utility is packaged with your IMS system and is recommended for existing mainframe users with experience with IMS or z/OS development. To run this version of the utility, you must write a control statement.

The plug-in version of the DLIModel utility allows you to generate and modify metadata in an Eclipse application development environment. This version of the utility is recommended for Java application and WDz, RAD, or RDz developers. You can run this utility using your IMS source files as input, eliminating the need for a hand-coded control statement. The plug-in version of the utility also produces a graphical UML model file that makes viewing and modifying metadata easier.