Insert.

Adds loaded data to the table without changing existing table data.

Replace.

Deletes all existing data from the table, and inserts the loaded data. The table and index definitions do not change.

Restart.

Restarts a previously interrupted load operation.

Terminate.

Terminates a previously interrupted load operation and rolls back the operation to the starting point, even if consistency points were passed. The tablespaces return to normal state, and the external loader makes all table objects consistent.