Agile web developement - Depot App first application

hi there,
just wondering - i´m building my first app as described in “agile web
development” chapter 6 (depot) and followed the instructions to the
letter - i saw that the database my set up creates by default is not
mysql but sqlite - so i changed it and overwrote it with mysql and so
far all looks fine - does anyone have a similar experience and whether
i causes some problmes down the line? i´m just downloaded the latest
instant rails a a week ago - so some feature maybe changed since the
book was written - i´m reffering to the SECOND editon of the book.

thanks and regards,
JM