Hi,
I didn't study any special book. I was just on a DB2 conference where certification exams was for free. So I just tried it out and I passed...
By the way, on exams there can be some questions from older versions of products. I remember for certification 700 there was one question about olap starter kit (there was 8.2 database available) and olap starter kit was only in v7.1 not in 8.1 not in 8.2. So after the exam, there you can post comments. So I have comment to have a older version questions...
Ok, back to you question. I have got official answer to you question from IBM. Warehouse Center or Warehouse manager are not possible to buy any more. So official path should be: if you were using "Warehouse Center" the new product is "Data Warehouse Edition". If you were using "Warehouse Manager" the new product is "Data Stage".
According to my knowledge to your first question in this post, there is not possible to use parallel load in Warehouse Center and is not even possible to do this in Data Warehouse Edition. I don't know if this is possible to do with Datastage, but I asume it can be done if there is no possibility in Warehouse Center.
Hope this helps,
Grofaty