To generate DBDs you must first have added them to your project.
When you build a project, the non-COBOL files are built in the order in which they were added to the project. To ensure that a project's DBD files are genned before its PSB files you must add the DBD files to the project before the PSB files.
Generating a DBD updates the following files:
These files contain DBD source information that has been extracted and formatted into a smaller structure optimized for faster access during execution. The .dat files files are indexed files and can contain one or more generated DBD members.
When you generate the first DBD you will see message DBDUT0U35U informing you that dbdgen2.dat does not exist. Enter C to specify that you want to create dbdgen2.dat (and dbdgen2f.dat) and message DBDUT0U35U will not be displayed on subsequent DBD generations.
The dbdgen*.* and dbdname.acb files are created in the current directory. You need to ensure that you specify the location of these files to the enterprise server that you will be using. See the section Specifying the Location of Genned Files in the chapter Configuring IMS-enabled Enterprise Servers for more information.