1Z0-007多項(xiàng)選擇題每日一練(2019.12.14)

來(lái)源：考試資料網(wǎng)

1 Which four are valid Oracle constraint types? （）

2 Which two statements about creating constraints are true? （）

3 Which two statements accurately describe a role? （）

4 Which three statements correctly describe the functions and use of constraints? （）

5 When should you create a role?（）