Dealing with Temporal Schema Anomalies in History Databases.

@inproceedings{DBLP:conf/vldb/MartinNA87,
  author    = {N. G. Martin and
               Shamkant B. Navathe and
               Rafi Ahmed},
  editor    = {Peter M. Stocker and
               William Kent and
               Peter Hammersley},
  title     = {Dealing with Temporal Schema Anomalies in History Databases},
  booktitle = {VLDB'87, Proceedings of 13th International Conference on Very
               Large Data Bases, September 1-4, 1987, Brighton, England},
  publisher = {Morgan Kaufmann},
  year      = {1987},
  isbn      = {0-934613-46-X},
  pages     = {177-184},
  ee        = {db/conf/vldb/MartinNA87.html},
  crossref  = {DBLP:conf/vldb/87},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

Current databases do not process temporal information well. Databases containing historical information (history databases) have been proposed to provide more temporal capability by appending new data to relations instead of destructively updating them.

Because history databases do not discard data, they cannot discard outdated database schemas. Thus, in any proposal for a practical history database system, some method must be provided for accessing data from outdated, yet historically valid, database schemas. This paper investigates the problems resulting from restructuring a history database. It then explores different techniques for maintaining multiple schemas. Finally, it presents Schema Temporal Logic (STL) as a means of retrieving data from multiple historically valid database schemas using temporal logic.

Copyright © 1987 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.

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