Background
SDSC has been conducting research on the long-term preservation of and access to software-dependent electronic records. Current investigations have focused on textual, compound, and spatial records and on deriving software-independent representations of these records using XML and knowledge representations to capture content and context.
One aspect of this work not initially considered, is the importance and desirability of preserving temporal and multiversion functionality of the original record. Temporal aspects appear to be a fundamental characteristic of electronic records and are found across all classes of records investigated so far.
Carlo Zaniolo (UCLA/CS), is an expert in storage and efficient querying of multiversion XML documents, as well as temporal data models and query languages.
