你可能感興趣的試題

Which two statements are true regarding the USING clause in table joins?（）

A.It can be used to join a maximum of three tables
B.It can be used to restrict the number of columns used in a NATURAL join
C.It can be used to access data from tables through equijoins as well as nonequijoins
D.It can be used to join tables that have columns with the same name and compatible data types

多項(xiàng)選擇題

Which DBMS_SCHEDULER procedures can be used to enable a program?（）

A. ENABLE啟用
B. ENABLE_PROGRAM
C. VALIDATE_PROGRAM
D. SET_ATTRIBUTE設(shè)置屬性
E. SET_ENABLED