Are subqueries better than joins?

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What is an exception in PL/SQL? What are the two types of exceptions?

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Can a foreign key have a different name?

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What are the advantages of VIEW?

5 Answers  

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How to write a procedure for displying the data in a TREE or (PARENT and CHILD ) relationship , for ex: A is the main project id, for this project B,C,D are sub tasks(sub project id's) for B the sub tasks are e,f,g and for c is h ,i ,j and for d is k,l,m now i need to display the o/p in a TREE fashion pls help me , thanks in advance surendra

2 Answers   Zensar,

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Explain the methods used to protect source code of pl/sql.

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How to convert comma separated string to array in pl/sql?

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What does partition by mean in sql?

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Explain the steps needed to create the scheduled job?

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What are different types of refreshment techniques of materialised view

2 Answers  

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what command is used to create a table by copying the structure of another table including constraints ?

6 Answers   CMC, eicc,

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Which operator is used in query for pattern matching?

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