Search found 2 matches
- Tue Feb 09, 2016 12:25 pm
- Forum: IBM DB2 and IMS DB/DC
- Topic: Unique column, unique index and priamry key use in DB2.
- Replies: 3
- Views: 520
Re: Unique column, unique index and priamry key use in DB2.
I did some study on this but I still hail the same confusion. Does anyone has good explantion about it?
- Tue Feb 02, 2016 11:33 am
- Forum: IBM DB2 and IMS DB/DC
- Topic: Unique column, unique index and priamry key use in DB2.
- Replies: 3
- Views: 520
Unique column, unique index and priamry key use in DB2.
If I define a unique column in a DB2 columns why do we need to define a unique INDEX also in order to insert the values in the table? And when we have a unique INDEX why do we need a primary key, are they just not similar things?