Which two statements are true regarding views? (Choose two.)
A.
A sub query that defines a view cannot include the GROUP BY clause
B.
A view is created with the sub query having the DISTINCT keyword can be updated
C.
A Data Manipulation Language (DML) operation can be performed on a view that is created with the sub
query having all the NOT NULL columns of a table
D.
A view that is created with the sub query having the pseudo column ROWNUM keyword cannot be updated
Explanation:
Rules for Performing DML Operations on a View
You cannot add data through a view if the view includes:
Group functions
A GROUP BY clause
The DISTINCT keyword
The pseudocolumn ROWNUM keyword
Columns defined by expressions
NOT NULL columns in the base tables that are not selected by the view