foreign key is NULL foreign key reference as Primary key in another table

what is the difference between primary key & foreign key?

Question Posted / shree

Answer Posted / shree

foreign key is NULL
foreign key reference as Primary key in another table

Primary key is unique
primary key is not NULL and

Is This Answer Correct ?

46 Yes

12 No

Please Help Members By Posting Answers For Below Questions

I creat Credit memo in AR. Now i want revers the Credit Memo.how you can revers that what out any aditional entry.

2305

What is dual table oracle?

984

How to create a new view in oracle?

1076

How to do paging with oracle?

995

What is the difference between substr and instr?

1034

What is a server parameter file in oracle?

1055

How to invoke the original export import utilities?

1056

How to write a query with an inner join in oracle?

1036

How to check your oracle database 10g xe installation?

984

How to create tables for odbc connection testing?

1110

How to use an explicit cursor without open statements?

1051

How to empty your oracle recycle bin?

1018

I have a database backup file in .db (ext) form how to conver it into .dmp (ext.) for oracle database

2136

List out the components of logical database structure of oracle database.

1034

Explain mutating triggers.

1025