Synonyms
Temporal restriction
Definition
Temporal specialization denotes the restriction of the interrelationships between otherwise independent (implicit or explicit) timestamps in temporal relations. An example is a relation where tuples are always inserted after the facts they record were valid in reality. In such a relation, the transaction time of a tuple would always be after the valid time. Temporal specialization may be applied to relation schemas, relation instances, and individual tuples.
Key Points
Data models exist where relations are required to be specialized, and temporal specializations often constitute important semantics about temporal relations that may be utilized for, e.g., improving the efficiency of query processing.
Temporal specialization encompasses several kinds of specialization. One is based on the relationships between isolated events and one based on inter-event relationships. Two additional kinds consider intervals instead of events, and one is based on...
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsRecommended Reading
Jensen CS, Dyreson CE, editors. A consensus glossary of temporal database concepts – February 1998 version. In: Etzion O, Jajodia S, Sripada S, editors. Temporal databases: research and practice. LNCS 1399. Berlin: Springer; 1998. p. 367–405.
Jensen CS, Snodgrass RT. Specialized temporal relations. In: Proceedings of the 8th International Conference on Data Engineering. 1992; p. 594–603.
Jensen CS, Snodgrass RT. Temporal specialization and generalization. IEEE Trans Knowl Data Eng. 1994;5(6):954–74.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Section Editor information
Rights and permissions
Copyright information
© 2018 Springer Science+Business Media, LLC, part of Springer Nature
About this entry
Cite this entry
Jensen, C.S., Snodgrass, R.T. (2018). Temporal Specialization. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_1058
Download citation
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1058
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-8266-6
Online ISBN: 978-1-4614-8265-9
eBook Packages: Computer ScienceReference Module Computer Science and Engineering