ocp-462

QUESTION NO: 462

In which cases is reference partitioning effective in enhancing performance?

A. It is effective only in partition pruning.

B. It is effective only in partitionwise joins provided that the query predicates are different from the partitioning

key.

C. It is effective in both partition pruning as well as partitionwise joins provided that the query predicates are

identical to the partitioning key.

D. It is effective in both partition pruning as well as partitionwise joins irrespective of whether the query

predicates are different from or identical to the partitioning key.

Answer: D

D.它在分区修剪以及智能化分区连接都是有效

的，不论是否查询谓词（判断） 同分区键是不同或完全相同。