單項選擇題

What is necessary for your query on an existing view to execute successfully?（）

A. The underlying tables must have data.
B. You need SELECT privileges on the view.
C. The underlying tables must be in the same schema.
D. You need SELECT privileges only on the underlying tables.

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多項選擇題

Which two statements accurately describe a role? （）

A. A role can be given to a maximum of 1000 users.
B. A user can have access to a maximum of 10 roles.
C. A role can have a maximum of 100 privileges contained in it.
D. Privileges are given to a role by using the CREATE ROLE statement.
E. A role is a named group of related privileges that can be granted to the user.
F. A user can have access to several roles, and several users can be assigned the same role.

單項選擇題

Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables:

Which UPDATE statement is valid?（）

A.
B.
C.
D.

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What is necessary for your query on an existing view to execute successfully?（）

你可能感興趣的試題

Which two statements accurately describe a role? （）

Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables: Which UPDATE statement is valid?（）

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Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables:

Which UPDATE statement is valid?（）