试题详情
- 多项选择题Which statements are true regarding table compression？（）
A、 It saves disk space and reduces memory usage.
B、 It saves disk space but has no effect on memory usage.
C、 It incurs extra CPU overhead during DML as well as direct loading operations.
D、 It incurs extra CPU overhead during DML but not direct loading operations.
E、 It requires uncompress operation during I/O.
- A,C
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