What are the disadvantages of not performing database normalization?

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Which is faster union or join?

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When are we going to use truncate and delete?

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Mention what are the benefits of pl/sql packages?

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what are myisam tables? : Sql dba

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What do you mean by rowid?

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Why primary key is required?

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What are reports usually used for?

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Where do we use pl sql?

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What do you understand by pl/sql packages?

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IF EMP HAS 2 ROWS,DEPT HAS 4 ROWS.WHATS THE RESULT OF SELECT * FROM EMP,DEPT;

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2. Select A.A from ( select 1 as from dual Union select 1 as from dual)A Full outer join ( select 1 B from dual Union select 2 B from dual)B On A.A=B.B

2 Answers   Fintellix,

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