Can a foreign key be null?
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can i use global variables in stored procedure or function
What is composite data type in pl sql?
What is use of package in pl sql?
select * from emp where sal in(select max(sal) from emp) here there is any limit for in operator how many values accpect ?
What are the disadvantages of not performing database normalization?
what is myisam? : Sql dba
what is the difference between trigger and constraint?
Explian rowid, rownum?
Why do we use sql constraints?
what is the difference between implicit and explicit trigger
Tell me what a package consists of.
What is scalar function in sql?
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