Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

  1. Categories >> Software >> Databases >> SQL PLSQL
  2. Suggest New Category

Can we use more than one null value for unique key?

Question Posted / iftekharul haque

Answer Posted / iftekharul haque

no because primary key is the unique value of the table that
can not allow null&duplicate value.
so it is not possiblity use more than one null value and
duplicate valu

Is This Answer Correct ?    5 Yes 12 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain two easy sql optimizations.

975

What are the constraints available in sql?

1010

Why do we use sql constraints?

1134

When are we going to use truncate and delete?

937

What are different types of functions in sql?

962

Explain the methods used to protect source code of pl/sql.

978

What is your daily office routine?

2224

what is text? : Sql dba

1017

How do sql triggers work?

995

Is natural join same as inner join?

878

Which data type is a composite type?

943

Can we insert data into materialized view?

904

Is ms sql is free?

972

How many developers work on postgresql?

922

What is oracle pl sql developer?

942