XMLDB lite engine for accessing XML data files via HTTP. Engine allows you to request data from xml file with using XPath. Imagine you have a set of XML files with your content data and can be queried via HTTP, just by sending GET/POST request to your server. XMLDBelt gets your request, process it and returns only the chunk of data that you requested. Less traffic, less time spent to process arrived data on your end. So, on your script side you have less amount data to parse, means saving on performance too.