答案解析
Examine the following statement:SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE;Which three statements are true?
- A、Rows may be inserted into the table.
- B、The PK index is made unusable.
- C、The PK index is droppe
- D、The constraint is still enforced for updated rows
- E、The constraint is still enforced for inserted rows.
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