问题:
Examine the command:
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
What does the command accomplish?()
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.
Examine the command:
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
What does the command accomplish?()
● 参考解析
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