Which two statements about creating co

Which two statements about creating constraints are true?（）

A Constraint names must start with SYS_C
B All constraints must be defines at the column level.
C Constraints can be created after the table is created.
D Constraints can be created at the same time the table is created.
E Information about constraints is found in the VIEW_CONSTRAINTS dictionary view.

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分类：1Z0-007题库

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