COMPRESSION clause SSL
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5.6 Storing the records of a record type in compressed form COMPRESSION FOR ALL ITEMS
A record type containing an item of variable length may not be compressed.
Under CALL DML, records can be compressed by storing only p art of the items belonging
to the record type (see the "Application Programming" manual, STORE 2).
The COMPRESSION clause is used if UDS/SQL is not to fill the omitted items with stand ard
values, but is to store records in the compressed form in which they exist at the CALL
interface.
For record types defined with LOCATION MODE IS CALC in the schema DDL compression
generates indirect CALC pages.
If this clause is specified, no records of the record type ca n be updated with SQL.