The Blog from the DBA Classroom

By: Joel Goodman

Interested in Star Transformation Queries??

Posted by Joel Goodman on 15/01/2009


Oracle Data Warehouses often perform complex n-way joins with aggregating functions such as SUM , COUNT and AVG. Star Transformation is a type of rewrite technique for optimising such queries and exploits the power of bitmap indexes. To learn more about this feature please read the article I wrote for the Oracle University EMEA Newsletter.

>> Your Transformation is in the Stars

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

 
%d bloggers like this: