RE: DW reading for design and implementation

Hi,

There are some DW ressources out there :

www.dw-institute.com
www.dmrewiew.com
www.olapcouncil.org
www.redbooks.ibm.com/pubs/pdfs/redbooks/sg242238.pdf  (Excellent !)

Books by Ralph Kimball (www.ralphkimball.com) and Bill Inmon

For Oracle DW only, look for the book from Tim Gorman and Gary Dodge.

You can stay with your current technology to build a DW. One approach is to keep the detailed data in star schema format in Oracle and build cubes with Powerplay for at least 90% of the end users. Then let the remaining 10% (business analysts) access the raw data in Oracle.

>From Oracle to Oracle and if your developpers are at least average, you do
not need an ETL tool. PL/SQL can do the job easily.

I've done something like that 4 yeasr ago with the same environment (Oracle 8 Powerplay 5) as you described and it is still in production.

If you go with consultants, ask for reference of datawarehouse system that they have built and are still in prodeuction. I've seen a lot of DW crashing after 1 year because of no scalability.

HTH Stephane Paquette
Administrateur de bases de donnees
Database Administrator
Standard Life
www.standardlife.ca
Tel. (514) 925-7187
stephane.paquette_at_standardlife.ca <mailto:stephane.paquette_at_standardlife.ca>

-----Original Message-----
Somani
Sent: Wednesday, March 26, 2003 9:59 AM
To: Multiple recipients of list ORACLE-L

Listers,

We are in our first year of production and our transactions are growing in volumes unforeseen. Our management team, our customers, and our clients are most interested in analyzing historical trends so they can better predict future trends. At the moment we use ad-hoc reporting at month/period end on our operational database which is the only database structure we have at the moment.

Technology infrastructure
Oracle 8.1.7.0.0 on RS/6000
Cognos BI Tools - Impromptu and PowerPlay

I'm looking to plan for the future. What do I do? Am I to build a data warehouse? What are best practices? Is anyone able to recommend websites, articles, **books**, or share similar experiences to point me in the right direction?

Thanks in advance for your help.

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Author: Saira Somani
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Author: Stephane Paquette
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