This document outlines a specification for a temporal query system called Chronus II. The design of Chronus II has been influenced by the original Chronus system, which was written in Stanford University by Amar Das, and by the TSQL2 temporal query specification, which was written by Richard Snodgrass at the University of Arizona. We first outline the general features that we would like Chronus II to provide. We follow this discussion with a detailed review of the temporal model that will serve as the underpinning of our implementation. We then describe the steps that we will take to provide this implementation.
