1. 下列定义外键约束的子句,正确的是
a. FOREIGN KEY C1 REFERENCES T.C1)?
b. FOREIGN KEY (C1) REFERENCES T(C1)
c. FOREIGN KEY (C1) REFERENCES T.C1
d. FOREIGN KEY C1 REFERENCES T(C1)
(责任编辑:admin)要这答案加QQ:800020900 或加微信:vq800020900 获取