单项选择题
A. USER_TAB_PRIVS_MADE
B. USER_TAB_PRIVS
C. USER_COL_PRIVS_MADE
D. USER_COL_PRIVS
单项选择题 CREATE TABLE dept (deptno NUMBER(2), dname VARCNAR2(14), 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT What is true about the set? （）
单项选择题 Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table? （）
多项选择题 Which three are DATETIME data types that can be used when specifying column definitions? （）