CS240A:%20Databases%20and%20Knowledge%20Bases%20Temporal%20Applications%20and%20SQL:1999
https://www.powershow.com/view1/c12a9-ZDc1Z/CS240A_20Databases_20and_20Knowledge_20Bases_20Temporal_20Applications_20and_20SQL1999_powerpoint_ppt_presentation
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