What is the difference between a primary key & a unique key?

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what is the use of rank function?

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create or replace procedure show_tab_rec ( P_tab VARCHAR2 ) IS cmd varchar2(50); begin cmd := 'select * from '|| P_tab; for int in ( execute immediate cmd ) loop dbms_output.put_line ( int.ename||' '||int.deptno); end loop; end; when i m compling this procedure i m getting this error PLS-00103: Encountered the symbol "IMMEDIATE" when expecting one of the following: . ( ) , * @ % & | = - + < / > at in is mod remainder not range rem => .. <an exponent (**)> <> or != or ~= >= <= <> and or like LIKE2_ LIKE4_ LIKEC_ between || multiset member SUBMULTISET_ PLZ solve this error give this question answer asap Thanks advance.......

1 Answers   HCL,

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HI Friends Myself Manoj,i am from bengaluru.i have 1 yr of exp in PLSQL but not upto the mark..now attending interviews but m not able to clear even 1 round..i have attended 3 interviews till today.purpose of writing this query is,i want to know the intreview topics that interviewer going to ask frequently,mainly SCENARIO based questions.IF anybody have any PLSQL projects please give it to me,it will helps me alot.Thanks for your patience.

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What is sequence?

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How to display the hierarchy of employee and managers without using connect by prior.

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what are the different types of cursors? explain?

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How to use "for" statements in oracle?

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What is program global area (pga) in oracle?

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i have a table with 1 lac of data.i want to insert this data into another table. i want every 5000 of data insert use a commit.using counter and if error is comming in the 5000 of data it rollback.

1 Answers   MasterCard,

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When does a Transaction end ?

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What is a cursor and what are the steps need to be taken?

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