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Which statements are true regarding system-partitioned tables?（）
A:Only a single partitioning key column can be specified.
B:All DML statements must use partition-extended syntax.
C:The same physical attributes must be specified for each partition.
D:Unique local indexes cannot be created on a system-partitioned table.
E:Traditional partition pruning and partitionwise joins are not supported on these tables.

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出自：Oracle认证

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