Abstract
A significant property of temporal data is their richness of semantics. Although several temporal data models and query languages have been designed specifically to handle the temporal data, users must still deal with much of the implicit temporal information, which can be automatically derived from the stored data in certain situations. We propose a multidatabase architecture where an appropriate formalization of the intended semantics is associated with each temporal relation and temporal database. This allows a temporal mediator to access the databases to retrieve implicit information in terms of time granularities different from those used to store data. We also describe how the temporal mediator can provide a user interface to the multidatabase system allowing temporal queries in terms of arbitrary granularities and involving relations in different TDBMS.
The work was partially supported by the National Science Foundation (NSF) under the grant IRI-9633541. The work of Wang was also partially supported by the NSF grant IRI-9409769.
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Bettini, C., Wang, X.S., Jajodia, S. (1998). An architecture for supporting interoperability among temporal databases. In: Etzion, O., Jajodia, S., Sripada, S. (eds) Temporal Databases: Research and Practice. Lecture Notes in Computer Science, vol 1399. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0053697
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DOI: https://doi.org/10.1007/BFb0053697
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