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...

What is the difference between Primary key and
unique index?

Answer Posted / rams

Primary Key is Unique and Not Null. Unique index can be defined on Primary Key or any other Unique column in the table. Unique index can have a Null Value unlike Primary Key.

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain about rct.

1072


List out the three types of page locks that can be held.

1135


Which component is used to execute the sql statements?

1082


What is sqlca?

1053


What is the default page size of buffer pools?

1108


What is the difference between db2 and oracle?

1106


can any one provide me the link for the db2 v7 & db2 v8 manual for Z/os? i need to know about the syntax of REORG in both versions & need to know the difference as well

2215


Explain about mirror activator disk mirroring?

990


What is dbrm? When it will be created?

1010


Discuss about db2 bind?

1078


What is difference between alias and synonym in db2?

1118


Can you tell me how can you find out the # of rows updated after an update statement?

1080


What is runstats and reorg in db2?

1284


Hi, i would like to start a new carrier in DB2 DBA.Which and what all step should i have to take..?

3139


What is a db2 tablespace?

1045