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...

If a table column has is UNIQUE and has NOT NULL, is it
equivalent to a PRIMARY KEY column?

Answer Posted / prashant t.

No.
It will same for doesn't allow null and duplicate values.
But, Primary key constrained applied Cluster index on that
column and unique key constraint non clustered index on
that column. that is the major differece still be there.

Is This Answer Correct ?    20 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain the use of file option in exp command.

1122


What is a cognitive schema?

956


what is the difference between data migration and production migration.

2337


Why does oracle 9i treat an empty string as null?

1040


What is analyze command used for?

1064


How can I introduce multiple conditions in like operator?

981


What to do if the binary spfile is wrong for the default instance?

1061


How to get a list of all user accounts in the database?

1084


What is a nvl function?

1013


What do you mean by cdb and pdb in oracle 12c?

1055


How can Oracle users be audited?

1104


How to write text literals in oracle?

1060


What is different types of joins?

1018


What is the difference between alert log file and tarce file ?

2163


WHEN CURSOR MOVES FROM ONE FORM TO ANOTHER FORM, HOW MANY TRIGGER WILL BE FIRED AND WHAT ARE THEIR SEQUENCE?

2298