Use XML as a local data store Starting with the easiest part of your question first, what format do you use to store the data in? You mention XML files—and I would wholeheartedly agree with this.

The key, said Antony Campitelli, formerly of Macromedia and now Laszlo's vice president of marketing, is finding a way to get around the twin problems of slow connections and often-overloaded servers.

What is AJAX (Asynchronous JavaScript and XML)? AJAX (Asynchronous JavaScript and XML) is a technique aimed at creating better and faster interactive web apps by combining several programming tools, ...