Map or .mdq files in a z/OS flat file

The name of the map or .mdq file must be the ddname of the DD statement that allocates the resource in the CICS startup JCL. The data set name (DSN parameter) is the name of the z/OS flat file that contains the map.

For example, the PORDER.MAP file is a native z/OS flat file that contains the POMAP.MVS map. The SKUDB.MDQ file is a native z/OS flat file that contains the SKUMDQ.MDQ file. Use the following DD statements in the CICS startup JCL:

//POMAP DD DSN=PORDER.MAP, DISP=SHR
//SKUMDQ DD DSN=SKUDB.MDQ, DISP=SHR

In the preloader control file, specify the map and .mdq files to preload:

MAPNAME=POMAP
MDQNAME=SKUMDQ