Data Studio is a tool for administering DB2 and IDS databases. There is Data Studio Standalone, which allows both for administration and for development of SQL/XQuery scripts and procedures. There is also Data Studio IDE, which includes all that and adds the ability to develop Java stored procedures and web services.
The book is a follow up on Getting Started with DB2 Express-C.
Feel free to grab the new DB2 Express-C 9.7.1 and give it all a try.
DB2 Express-C Community Team