Explain the difference between triggers and constraints?

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What is database white box testing and black box testing?

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What are the differences between in and exists clause?

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How do I clear the screen in sql plus?

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What are analytic functions in sql?

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Is pl sql different from sql?

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What is the diffrence between IN and EXISTS.which one is faster.

3 Answers   Infogain,

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write a procedure to print a statement or number not using "dbms_output.put_line" package.write a procedure instead of it using procdure name as "print" ex:- declare a number:=2; begin print(a); end; /* when U type above procedure 2 have to should be printed*/

2 Answers   iFlex,

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What is the difference between anonymous block and named blocks?

3 Answers  

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How to remove duplicate rows from a table?.

3 Answers  

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What are the events on which a database trigger can be based?

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i have a table t1 a math 20 b phy 30 cchemisty 10 a math 40 b phy 23 c che 21 a math15 bphy 33 c che 56 write a quire to find out the max markr of each subject

8 Answers  

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