考试
2021-02-25 12:20:50

(单选题)Evaluate the set of SQL s

题目描述

AThe DESCRIBE DEPT statement displays the structure of the DEPT table.

BThe ROLLBACK statement frees the storage space occupies by the DEPT table.

CThe DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.

DThe DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.

答案解析

[db:答案解析]

A

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