试题详情
- 单项选择题 Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT 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 occupied 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.
- A
关注下方微信公众号，在线模考后查看
热门试题
- 在PL/SQL中定义一个可以存放雇员表（
- What is true about u
- You have
- You issuedQ
- Which two statements
- TheINV_HISTORYtablei
- An index called ORD
- You create a new plu
- Which statemen
- In your multitenant
- The PRODUCTS table
- Given： What is
- View the E
- （）是有自己的系统全局区和与其相关数据库
- You are u
- The RMAN
- Given： If some
- Sales details&
- （）是Oracle最高一级逻辑存储结构。
- You want