多选题Which statements are true regarding system-partitioned tables?（）AOnly a single partitioning key column can be specified.BAll DML statements must use partition-extended syntax.CThe same physical attributes must be specified for each partition.DUnique lo
题目
多选题
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.