what is the difference between primary key & foreign key?
- 57 Answers
- 122439 Views
- CTS, Infosys, La Multi, Sparsh, Wipro, I also Faced
- E-Mail Answers
Answer Posted / reddy
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 ? | 0 Yes | 1 No |
Post New Answer View All Answers
How to do a full database export?
State the difference between a primary key and foreign key?
Is there any way to find out when one specific table/view/M-view is used last time. i.e. when one specific object is used in any SELECT statement.
What privilege is needed for a user to insert rows to tables in another schema?
Assuming that you are an End User How to find that in the payment Batch some of the Invoice was Missing To pay How to find That??
what are the advantages of running a database in archive log mode?
Why should I use oracle database?
How to define an oracle sub procedure?
How to name query output columns in oracle?
How to connect to a remote server?
How to set up autotrace for a user account?
What is a relational database management system?
Explain the types of exception?
How to start your 10g xe server from command line?
What is ceil and floor in oracle?
