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Examine the command:   ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;   What does the command accomplish?()

发布日期:2020-04-10

Examine the command:   ALTER DATABASE ADD SUPPLEME...
A

Creates an additional copy of the database online redo log files.

B

Stores the primary key column values of each row involved in a DML operation in the online redo log files.

C

Stores the primary key column values of each row involved in a DML operation in the supplemental log files.

D

Stores the old and new primary key column values of each row involved in a DML operation only when the primary key is modified in the online redo log files.

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