If two base tables have the same primary key and the primary key is used as the join column,updating the database is a problem.
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Q2: Views furnish a certain amount of security;
Q3: Views provide a measure of security.
Q4: The existing,permanent tables in a relational database
Q5: You cannot delete a row from a
Q6: A view can join two or more
Q7: The DROP VIEW command removes the tables
Q8: You can add rows to a view
Q9: Views provide data validation.
Q10: When you create a query that involves
Q11: The defining query can be any transaction.
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