Oracle OCP 19c 認證1Z0-082考試題庫(第17題)
最新學訊：近期OCP認證正在報名中，因考試人員較多請盡快報名獲取最近考試時間，報名費用請聯系在線老師，甲骨文官方認證，報名從速！
我要咨詢Oracle OCP 19c 認證1Z0-082考試題庫(第17題)-CUUG內部學員版082題庫解析
17. Examine the following command:
CREATE TABLE (
prod_id number(4),
Prod_name varchar2 (20),
Category_id number(30),
Quantity_on_hand number (3) INVISIBLE);
Which three statements are true about using an invisible column in t he PRODUCTS table?
A. The %ROWTYPE attribute declarations in PL/SQL to access a row will not display the invisible column in the output.
B. The DESCRIBE commands in SQL *Plus will not display the invisible column in t he output.
C. Referential integrity constraint cannot be set on t he invisible column.
D. The invisible column cannot be made visible and can only be marked as unused.
E. A primary key constraint can be added on t he invisible column.
