What is true about updates through a view?（）<br>A:You cannot update a view with group functions.<br>B:When you update a view group functions are automatically computed.<br>C:When you update a view only the constraints on the underlying table will be in effect.<br>D:When you update a view the constraints on the views always override the constraints on the underlying tables.

What is true about updates through a view?（）
A:You cannot update a view with group functions.
B:When you update a view group functions are automatically computed.
C:When you update a view only the constraints on the underlying table will be in effect.
D:When you update a view the constraints on the views always override the constraints on the underlying tables.

出自：Oracle认证

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