Answer / suman

what is indexing
An index is a performance-tuning method of allowing faster retrieval of records. An index creates an entry for each value that appears in the indexed columns. By default, Oracle creates B-tree indexes.

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How run sql*plus commands that are stored in a local file?

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What is set serveroutput on?

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0 Answers  

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Please let me know if UNION ALL and Natural Join does the same operation and are same...

7 Answers   iGate,

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Which certification is best for sql?

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what is the boundary line in varrays?

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declare l1 number := null; l2 number :=null; begin if l1=l2 then message('equal'); else if l1<>l2 then message('not equal'); else message('else'); end if; end if; end; What will be the output ?

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What is parallel hint?

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