What are restrictions on views?

Question

What are the restrictions that views have to follow? - Since a view is a virtual table – columns of the view cannot be renamed. To change anything in the view, the view must be dropped and create again. - When a table or view is dropped, any views in the same database are also dropped.

Which restrictions must be applied while creating a view?

- Views can be created referencing tables and views only in the current database. - A view name must not be the same as any table owned by that user. - You can build views on other views and on procedures that reference views.

What are the restrictions necessary to ensure a view is updatable?

If you want a join view to be updatable, then all of the following conditions must be true: The DML statement must affect only one table underlying the join. For an INSERT statement, the view must not be created WITH CHECK OPTION , and all columns into which values are inserted must come from a key-preserved table.

Which is not a limitation of view?

A view do not contain data of their own. 2. Which of the following is not a limitation of view? Explanation: Views created on indexed Columns are often used because of performance optimization problems.

How are views updated what are the restrictions in updating views?

Restrictions on Updating Data Through Views. You can insert, update, and delete rows in a view, subject to the following limitations: If the view contains joins between multiple tables, you can only insert and update one table in the view, and you can't delete rows.

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