HTML 5 Application Cache and Database

I ran across this post on Ajaxian about an HTML 5 application cache and database being built into Safari in the iPhone 2.1 update. The Apple documentation page on this subject can be found at this link. Basically, in Safari 3.1 and iPhone 2.0 or later, an SQLite database is built into the browser. The Apple article shows you how to use use the database.

Really cool stuff! I think Google Gears does the same thing, but this is built in.