Difference between primary key and unique key ?

Answer Posted / sarvan yadav

primary key does not null,but unique key also null.

Is This Answer Correct ?    2 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to create a testing table in oracle?

547


Can we use bind variables in oracle stored procedure?

492


How to create an initialization parameter file?

543


What is a schema in oracle?

548


What is oracle database 10g express edition?

602






What are the differences between lov and list item?

559


HI, Please let me know the syllabus for Oracle OCA and OCP Certification

1956


What are the varoius components of physical database structure of oracle database?

571


how may join possible between (requisition with purchase order)

1701


What is meant by recursive hints in oracle?

622


is there a tool to trace queries, like profiler for sql server?

610


what is partitioning? Types of partitioning. explain? what is the new kind of partitioning type introduced in 9i?

1850


Can a formula column referred to columns in higher group ?

2089


Explain an exception and its types?

611


How to connect ms access to oracle servers?

552