RDBMS has come to the browser

Ajaxian reports:

Firefox 3 is to support SQLite for offline storage. The new alpha release tells us this and a lot more (below).

The world of the RDBMS has come to the browser, and has jumped from server to client in the Web platform.

I think this is a pretty interesting innovation. Suddenly we will have a lot more agile storage space on the client side. We can do some complex relational storage on the client side. I wonder if cookies will undergo a major transformation (like limit on cookie size etc.). I wonder if we will see nice Javascript APIs to access the RDBMS on the client side (or did I miss it; is it already there?). I wonder if Browsers will collocate some of these data, and we may see something like 'single instance storage' on the client side? I think all of this was possible even without the RDBMS, however a database on the client side makes us think the various possibilities that existed on the server side.