What is a constraint? Tell me about its various levels.


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More SQL PLSQL Interview Questions

What are pl sql procedures?

0 Answers  


What is equi join in sql?

0 Answers  


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,


Why do we need pl sql?

0 Answers  


Explain locks? : Transact sql

0 Answers  






what is Difference between Having and Where clause?

5 Answers   IBM,


Is pl sql and postgresql same?

0 Answers  


Explain cursor types?

0 Answers  


How do I create a sql script?

0 Answers  


Explain the difference between triggers and constraints?

0 Answers  


Explain two virtual tables available at the time of database trigger execution.

1 Answers  


Can you have more than one trigger on a table?

0 Answers  


Categories