Skip to Main Content
Forums

SQL & PL/SQL

Announcement

For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!

Difference between Primary Key and Unique Key with NOT NULL constraint

951274Oct 11 2012 — edited Oct 15 2012
As both can be referred to another table.
Apart from the difference that Primary Key can be only 1 and Unique keys can be multiple,
is there any difference?
Like in terms of type of Index?
Comments
Locked Post
New comments cannot be posted to this locked post.
Post Details
Locked on Nov 12 2012
Added on Oct 11 2012
#and, #not, #with
19 comments
1,516 views