The StoreDefs property indicates whether the FieldDefs property and its contained list of TDBISAMFieldDef objects, as well as the IndexDefs property and its contained list of TDBISAMIndexDef objects, will be stored at design-time. This is especially useful for in-memory tables that do not actually have a physical table structure on disk, and will eliminate having to constantly specify this information prior to calling the CreateTable method.
It is not recommended that you set this property to True for disk-based tables.