Note that I am in the process of updating and reorganizing all the XTdb pages. Things may be in flux, missing, or just confusing for the next few days.
XTdb is a plugin/helper for XTension that provides database functionality, motion reports, gauges and graphs. By default it records changes in value or events for all Units in your XTension database. XTension provides interfaces for you to view historical data from this database as well as create graphical motion reports as well as gauges and graphs. These can all be displayed live updating in XTension views and any of the web interfaces.