Evaluate the set of SQL statements: <img src="/Image1/65/6504059e0636f2d81b8a16640e59d0b2.jpg" /> What is true about the set?（）<br>A:The DESCRIBE DEPT statement displays the structure of the DEPT table.<br>B:The ROLLBACK statement frees the storage space occupies by the DEPT table.<br>C:The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.<br>D:The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.

Evaluate the set of SQL statements:

What is true about the set?（）
A:The DESCRIBE DEPT statement displays the structure of the DEPT table.
B:The ROLLBACK statement frees the storage space occupies by the DEPT table.
C:The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.
D:The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.

出自：Oracle认证

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