● 收回用户li对表employee的查询权限,同时级联收回li授予其他用户的该权限,SQL语句为:(52) select ON TABLE employee FROM li (53) ;(52)A. GRANTB. GIVEC. CALL BACKD. REVOKE(53)A. RESTRICTB. CASCADEC. WITH GRANT OPTIOND. WITH CHECK OPTION

● 收回用户li对表employee的查询权限,同时级联收回li授予其他用户的该权限,SQL语句为:

(52) select ON TABLE employee FROM li (53) ;

(52)

A. GRANT

B. GIVE

C. CALL BACK

D. REVOKE

(53)

A. RESTRICT

B. CASCADE

C. WITH GRANT OPTION

D. WITH CHECK OPTION


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