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User SCOTT&的答案

User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK,or any data definition language (DDL) command: 
SQL> SELECT job FROM emp 
2  WHERE job=’CLERK’ FOR UPDATE OF empno; 
SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT’s second session?()

多选题
2022-01-05 13:28
A、LOCK TABLE emp IN SHARE MODE;
B、LOCK TABLE emp IN EXCLUSIVE MODE;
C、DELETE FROM emp WHERE job=’MANAGER’;
D、INSERT INTO emp(empno,ename) VALUES (1289,’Dick’);
E、SELECT job FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno&#894
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正确答案
A| B| E

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标签: 1Z0-042
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