A first approach to temporal predicate locking for concurrency detection in temporal relational databases supporting schema versioning

  • Cristina De Castro
Contributed Papers
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1338)


Recently, a great deal of attention has been devoted to the problem of schema versioning. A possible solution [3, 7] maintains all the temporal intensional information in a unique “completed schemata” and all the underlying temporal data in a unique structure, here called “single-pool”. As in [3, 7], the data can be accessed through any schema version, thus the problem arises of the concurrency control of the access to the single-pool. A simple solution is here proposed that detects conflicts checking first the intensional and then, if needed, the extensional level.


Temporal Data Intensional Concurrency Extensional Concurrency 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Cristina De Castro
    • 1
  1. 1.C.S.I.TE. - C.N.R.University of BolognaBolognaItaly

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