先試後買

A. Defining a new relationship on a pair of tables that was already identified in an existing Access Definition may affect processes that use that Access Definition.

B. When an Access Definition is used it can only follow relationships that were defined at the time the Access Definition was created.

C. An Optim-defined relationship is also enforced by the database manager.

D. An Optim-defined relationship is as restrictive as a DB2 relationship.

A. Control File

B. Archive File

C. Index File

D. Extract File

A. the Table and Column Maps

B. the data that has been archived

C. the Access Definitions

D. the Optim-defined Primary Keys and Relationships

A. column names

B. creator IDs

C. attributes

D. base names