Hi Vincent,

I read the discussion from the first posts, and i can tell you that your first article about ODS confused me a lot.

I read a lot of articles about ODS and Data warehouse. I also worked on several DW/BI projects and till now i never had to deal with ODS, we put every detail in the data warehouse, sometimes in 3 Normal form and others in Dimensional Form...

Concerning ODS, term which was coined by Inmon and Imhof, had to serve tactical decisions rather then strategic ones. That's good, but when i read kimball's article about ODS, i understood that it's only question of the periodicity of the refreshment of data... So since ETL technology are moving from batch mode to near realtime mode, i don't see any need to still have an ODS.

What do you think about this ?

By the way, i just had your book, i will read it... at first view it seems to be very interesting

Abdel.