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A.CREATE ASSERTION
B.FOREIGN KEY
C.CREATE ROLE
D.CREATE TRIGGER

A.類型級(jí)約束
B.屬性級(jí)約束
C.關(guān)系級(jí)約束
D.數(shù)據(jù)庫級(jí)約束

A.DOMAIN
B.ASSERTION
C.CONSTRAINT
D.TRIGGER

A.類型級(jí)約束
B.屬性級(jí)約束
C.關(guān)系級(jí)約束
D.數(shù)據(jù)庫級(jí)約束

A.CREATE ASSERTION
B.CREATE TRIGGER
C.CREATE ROLE
D.CREATE DOMAIN

A.斷言
B.自主存取權(quán)限控制
C.用戶標(biāo)識(shí)與密碼
D.強(qiáng)制存取權(quán)限控制

A.CREATE ASSERTION
B.CREATE TRIGGER
C.CREATE ROLE
D.CREATE DOMAIN

A.CASCADE
B.RESTRICT
C.SET NULL
D.SET DEFAULT

A.SQLCODE
B.主語言變量
C.游標(biāo)
D.數(shù)組

A.CREATE DATABASE
B.CREATE TABLE
C.CREATE VIEW
D.CREATE INDEX