Tcl Database Interface Framework
Essentially TDIF is an attempt to marry all of the ways the Tcl exchanges data with the outside world into one sound interface. The idea is to create a layer that makes it utterly transparent to one's software whether it is storing data in a CSV file, an sql database, or a weather station connected via USB.
A complete handling of the topic will be presented at the 2007 Tcl Developer's Conference in New Orleans. You can follow along with the development on hypnotoad's blog: [L1 ]