>Well, I've followed Val Matison and Brian Jones sessions at different conferences and they told us many details about their applications like the size, the number of records, etc.

It would be really cool if others who have worked in huge
databases projects can share those details as well.

You can find a good collection of white papers on the net about
data warehousing at: http://pwp.starnetinc.com/larryg/whitepap.html

One ot them contains a set of data warehouse's case studies at:
http://www.tekptnr.com/tpi/tdwi/cases/index.htm

This other is somehow obvious but, here it goes:
http://www.datawarehousing.com/
You can find there a lot of DW resources on the net.

HTH,

J. Luis