Database layout version and realm layout version

The database layout version identifies the structure of a database; in the same way, the realm layout version identifies the structure of a realm. With UDS/SQL V2.9, you can only process databases and realms with layout version 004.00 and 005.00. You can use the DISPLAY PAGE ZERO statement in the utility routine BPRECORD to output a realm’s ACT-KEY-0 page. As part of this information, the database layout version is output for the DBDIR and the realm layout version is output for the other realms.