Adapting subschemas

When the compiler database is being prepared for restructuring, one of BCHANGE’s tasks is to delete all the SSIAs in the DBDIR and all subschema information in the DBCOM. The DDL compiler then readies the COSSD to accept new subschema information when compiling the new Schema DDL. Consequently all the old subschema information is deleted after the restructuring phase. No subschema information has as yet been entered in the new COSSD.

Therefore, once BALTER has restructured the database, all subschemas must be recompiled and a new SSIA must be generated for each and entered in the DBDIR.