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What are the technique to define a schema completely ?
A schema is completely define by DDL and DML query language.
Example: //REVOKE ALL ON EMP FROM MCA12; (All permissions will be cancelled) You can also cancel only some of the permissions. Drop: A user-
How can you map NULL values to other values while display? IF( ) , IFNULL( ) keywords are used to do so. They are 'LIMIT' is used for the following kinds of problems: 1) Ans
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compare the features of oracle RDBMS with MySQL and Microsoft SQL server
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