Definition
Sequenced semantics make it possible to generalize a query language statement on a nontemporal database to a temporal query on a corresponding temporal, interval time-stamped database by applying minor syntactic modifications to the statement that are independent of the particular statement. The semantics of such a generalized statement is consistent with considering the temporal database as being composed of a sequence of nontemporal database states. Sequenced semantics takes into account the interval timestamps of the argument tuples when forming the interval timestamps associated with result tuples, as well as permits the use of additional timestamp-related predicates in statements.
Key Points
A question that has intrigued temporal database researchers for years is how to systematically generalize nontemporal query language statements, i.e., queries on nontemporal databases, to apply to corresponding temporal databases. A prominent approach is to view a temporal database...
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
Böhlen MH, Busatto R, Jensen CS. Point- versus interval-based temporal data models. In: Proceedings of the 14th International Conference on Data Engineering; 1998. p. 192–200.
Böhlen MH, Jensen CS, Snodgrass RT. Temporal statement modifiers. ACM Trans Database Syst. 2000;25(4):48.
Snodgrass RT. Developing time-oriented database applications in SQL. San Francisco: Morgan Kaufmann; 1999.
Author information
Authors and Affiliations
Corresponding authors
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
Böhlen, M.H., Jensen, C.S. (2018). Sequenced Semantics. 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_1053
Download citation
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1053
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