Apologies - as pointed out by TritonOps - the database files are ONLY in the finalapplication.zip to save on space on the site (there is a limit to the space a book is allowed to use). Sorry this wasn't apparent that this would be the case when I was writing it (and so isn't reflected in the text). As you can surmise the code download files were finalized after the text had been finished and submitted to layout.
I will update the C# version of the book to mention this, and flag this for the errata in Appendix B (Jim can you add this please)? Hopefully we'll get this mentioned in reprints. Originally when I started writing the installation appendix there was only going to be one or two zip files, and then it became apparent just how big the downloads would need to be as we went along and would need splitting up.
Also I can confirm that when you post on this forum or email it to us, the authors and the staff at Wrox who answer your queries... :-)