Primary key is unique index and non null coulum in a table. While foreign

What is the difference between the Primary and Foreign key?

Question Posted / suma

Answer Posted / suma

Primary key is unique index and non null coulum in a table.
While foreign key can have repeated values.

Is This Answer Correct ?

9 Yes

1 No

Please Help Members By Posting Answers For Below Questions

what is the difference between clustered and non clustered index in sql? : Sql dba

1107

Is foreign key mandatory?

988

Can you have more than one trigger on a table?

986

Can we use distinct and group by together?

1025

Is there a way to automate sql execution from the command-line, batch job or shell script?

954

How to generate a salary slip like jan 1000 1000 feb 1000 2000 ... dec 1000 12000

2151

Explain locks? : Transact sql

987

Can a foreign key be a duplicate?

896

What is scope of pl sql developer in future?

992

Which table is left in join?

958

Is sql considered coding?

1027

How do you define a foreign key?

980

What is pl sql record in oracle?

1011

What is sql performance tuning?

902

What is asqueryable?

951