DB2 database design : physical design is important

19 May,2011 by Tom Collins

The regular comment passed by DBA s  is “90 % of the overall db performance is based on the code written against it”

There is truth to this comment , and large amounts are written on optimising queries on DB2 databases. DB2  database design physical  supports logical database design

 This comment came up today at a team meeting . It turned out the developer wrote a query assuming an index existed – and the query reflected this assumption.  It turned out the index was missing

 Good physical design is important , and in most cases the DBA is responsible for either creating the physical design or signing off on the design

 Physical design is a  big topic including:

-data type choice


-index design

-multidimensional clustering


-Materialized query table

 A coder can only work the existing DB2 database design : logical and physical


 Source:Jack Vamvas(http://www.dba-db2.com)

Author: Rambler(http://www.dba-db2.com)


Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.


Post a comment on DB2 database design : physical design is important

Comments are moderated, and will not appear until the author has approved them.

dba-db2.com | DB2 Performance Tuning | DBA DB2:Everything | FAQ | Contact | Copyright