Why primary key is required?


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More SQL PLSQL Interview Questions

Can u create a primary key with out unique index.

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Is sql low level language?

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What is the use of a view in sql?

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How is pl sql different from sql?

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What is type and rowtype in pl sql?

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What is the command used to fetch first 5 characters of the string?

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What is indexing oracle sql?

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how to create object in plsql

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I have a procedure in a procedure. The inner procedure contains out parameter. How I can call the inner procedure in the out procedure and send the inner procedure parameter value(out parameter value) into out procedure?

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What is the use of <> sql?

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Is it possible to create the following trigger: before or after update trigger for each row?

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How many types of normalization are there?

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