adspace


What is the difference between column level constraints and
table level constraints?

Answer Posted / priya

Constraints define the conditions or predictions under
which data is valid.
column level constraints are applicable to single column
only like if we want to make Unique constraint on column
level then as shoen below:-
<column Name><data type>Unique
At table level
Unique(<coulmn>,<column>);
Table level constraints means when constraints apply on
more than single column.

Is This Answer Correct ?    22 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to put more than 1000 values into an oracle in clause?

1115


How to select all columns of all rows from a table in oracle?

1132


Design database draw er diagram for a certain scenario ?

4656


How to use values from other tables in update statements using oracle?

1158


What is oracle latest version?

1174


How to start an oracle instance?

1103


How to write a left outer join with the where clause in oracle?

1156


Please send me Informatica 8.1 certification dumps, my mail id mona85gupta@gmail.com

1956