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 / kuldeep singh

Primary Key=Unique+Not Null+Sorting+Cluster Index
So
UNIQUE +NOT NULL != PRIMARY KEY
it cant refer someother table column

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How do I manually uninstall oracle client?

1025


Explain index?

1205


Is it possible to center an object horizontally in a repeating frame that has a variable horizontal size ?

2302


Define oracle database

993


How many data types are supported?

1028


Explain drop constraint oracle?

992


Tab A A B ------ 1 A 2 B 3 C Tab B A B ----- 4 D 5 E 6 F Generate the value into B table from A table. Only table A has the value. Write the SQL query to get B table value.

1697


what is a Nested Loop join?

2041


What to do if the startbd.bat failed to start the xe instance?

1018


How do we get field details of a table?

936


Is there any function in oracle similar like group_concat of mysql?

989


Explain do view contain data?

941


What is oracle sid?

891


How to shutdown your 10g xe server from command line?

1015


What is the difference between a hot backup and a cold backup in oracle?

961