What is the primary key?
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Does normalization improve performance?
Why triggers are used?
Where is sql database stored?
What are the disadvantages of not performing database normalization?
How can triggers be used for the table auditing?
What are the syntax and use of the coalesce function?
Why do we create stored procedures & functions in pl/sql and how are they different?
How do you retrieve the second highest salary from a table?
Which is better join or subquery?
What is recursive stored procedure?
How do I start pl sql?
Is primary key an index?
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