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...

Difference between primary key and unique key ?

Answer Posted / boomiraj.p

Primary key: Do not allow the
duplicates and null values.
Unique key : Do not accept the
duplicates,but allow null value

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

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

2095


How to create additional tablespaces for an new database?

968


master table and child table performances and comparisons in Oracle ?

2067


From the following identify the non schema object: packages, triggers, public synonyms, tables and indexes.

1009


What is a relational database management system?

1061


Can we convert a date to char in oracle and if so, what would be the syntax?

956


Why do we use coalesce function in oracle?

1050


how do we code triggers , store procedure , Performance tuning and indexing in a Java Project? Pls kindly get me the perfect answer with the code for each....thank you in advance............pls any body kindly help me soon as possible....

2001


What is archive log in Oracle?

1068


Explain temporal data types in oracle

1039


what is the dual table in oracle?

931


How to write text literals in oracle?

1018


State all possible different index configurations a table can possibly have?

945


How to execute the package in oracle?

1035


What is the difference between primary key and unique key and foreign key in oracle?

917