Semantics of Database Transformations

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dc.contributor.authorDavidson, Susan
dc.contributor.authorBuneman, Peter
dc.contributor.authorKosky, Anthony S
dc.date2023-05-17T00:44:25.000
dc.date.accessioned2023-05-22T13:12:01Z
dc.date.available2023-05-22T13:12:01Z
dc.date.issued1998
dc.date.submitted2007-06-11T10:49:55-07:00
dc.description.abstractDatabase transformations arise in many different settings including database integration, evolution of database systems, and implementing user views and data entry tools. This paper surveys approaches that have been taken to problems in these settings, assesses their strengths and weaknesses, and develops require ments on a formal model for specifying and implementing database transformations. We also consider the problem of insuring the correctness of database transformations. In particular, we demonstrate that the usefulness of correctness conditions such as information preservation is hindered by the interactions of transformations and database constraints, and the limited expressive power of established database constraint languages. We conclude that more general notions of correctness are required, and that there is a need for a uniform formalism for expressing both database transformations and constraints, and reasoning about their interactions, Finally we introduce WOL, a declarative language for specifying and implementing database transformations and constraints. We briefly describe the WOL language and its semantics, and argue that it addresses many of the requirements on a formalism for dealing with general database transformations.
dc.description.commentsPostprint version. Published in Lecture Notes in Computer Science, Semantics in Databases, 1998, pages 55-91. Publisher URL: http://dx.doi.org/10.1007/BFb0035005
dc.identifier.urihttps://repository.upenn.edu/handle/20.500.14332/8766
dc.legacy.articleid1023
dc.legacy.fulltexturlhttps://repository.upenn.edu/cgi/viewcontent.cgi?article=1023&context=db_research&unstamped=1
dc.source.issue20
dc.source.journalDatabase Research Group (CIS)
dc.source.peerreviewedtrue
dc.source.statuspublished
dc.titleSemantics of Database Transformations
dc.typePresentation
digcom.identifierdb_research/20
digcom.identifier.contextkey313392
digcom.identifier.submissionpathdb_research/20
digcom.typeconference
dspace.entity.typePublication
relation.isAuthorOfPublication0333442e-3d14-436f-a402-8c2eeb35eb7c
relation.isAuthorOfPublication8745db9f-179e-44cc-b220-4c42e9d34615
relation.isAuthorOfPublication.latestForDiscovery0333442e-3d14-436f-a402-8c2eeb35eb7c
upenn.schoolDepartmentCenterDatabase Research Group (CIS)
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