sp_dboption

Adaptive Server 15.7 SP100 introduces new parameters for the sp_dboption system procedure.

allow incremental dumps

The allow incremental dumps parameter supports back-up and restoration of cumulative dumps.

For example:
use master
go
sp_dboption mydb, "allow incremental dumps", true
go

If you do not first enable allow incremental dumps, you cannot perform a cumulative dump on your database.