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Type	Book Chapter
Scope	Discipline-based scholarship
Title	Sequenced Semantics
Organization Unit	Database Technology (Michael Hanspeter Böhlen)
Authors	Michael Hanspeter Böhlen Christian Jensen
Editors	Ling Liu M Tamer Oezsu
Item Subtype	Original Work
Refereed	Yes
Status	Published in final form
Language	English
Booktitle	Encyclopedia of Database Systems, Second Edition
ISBN	978-1-4614-8266-6
Place of Publication	New York, NY, USA
Publisher	Springer
Page Range	52
Date	2018
Abstract Text	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.
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