Difference between primary key and unique key ?
- 77 Answers
- 198969 Views
- Accenture, B2B Software Technologies, Cognizant, HP Finsoft, IndiaNIC, Karomi Technology, Keane India Ltd, L&T, Onward eServices, R Systems, Shakti, Techtic Solutions, I also Faced
- E-Mail Answers
Answer Posted / pandiyan
Primary key doesnot allow null value but unique key allows
null value.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the difference between alert log file and tarce file ?
How to view all columns in an existing table?
Difference between open_form and call_form in oracle.
What is private procedure oracle?
Please explain drop constraint oracle?
How to assign data of the deleted row to variables?
What is the database name in oracle?
What are the four Oracle system processes that must always be up and running for the database to be useable?
Is postgres faster than oracle?
What is a trigger oracle?
What are the execution control statements in oracle?
Is a rollback possible to any savepoint?
Explain the use of rows option in exp command.
What are the oracle differences between nvl and coalesce
What is null value in oracle?
