Zobrazeno 1 - 10
of 70
pro vyhledávání: '"P.M.D. Gray"'
Publikováno v:
Journal of Intelligent Information Systems. 17:281-299
Transforming queries for efficient execution is particularly important in federated database systems since a more efficient execution plan can require many fewer data requests to be sent to the component databases. Also, it is important to do as much
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2638ed37caffc718d98d2cc76f3a3368
https://doi.org/10.1023/a:1012866016118
https://doi.org/10.1023/a:1012866016118
Publikováno v:
Journal of Intelligent Information Systems. 12:113-137
We describe how to express constraints in a functional (semantic) data model, which has a working implementation in an object database. We trace the development of such constraints from being integrity checks embedded in procedural code to being some
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0df537597f10b516d263ff7db4bf846
https://doi.org/10.1023/a:1008748808699
https://doi.org/10.1023/a:1008748808699
Publikováno v:
Information and Software Technology. 35:301-311
This paper outlines the use of Prolog for implementing object-oriented databases (OODBs), to indicate both the benefits and costs associated with Prolog as an implementation platform. The different roles which Prolog can play in the implementation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42ba1de48139248ba1d7602cbbd6a449
https://doi.org/10.1016/0950-5849(93)90063-9
https://doi.org/10.1016/0950-5849(93)90063-9
Autor:
Graham J. L. Kemp, P.M.D. Gray
Publikováno v:
Managing Knowledge in a World of Networks ISBN: 9783540463634
EKAW
EKAW
As new semantic web standards evolve to allow quantified rules in FOL, we need new ways to capture them from end users in RDFS(XML). We show how to do this against a graphic view of Entities and their Relationships (associated or derived). This even
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e037c4c1a368cd54c25f67795e84ea45
https://doi.org/10.1007/11891451_4
https://doi.org/10.1007/11891451_4
Publikováno v:
SSDBM
There is unavoidable heterogeneity in the databanks and databases currently used for biological data collections. The authors are aiming to develop a system that will provide uniform access to heterogeneous databases via a single high-level query lan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca2932db81349122941c62412eecdeff
https://doi.org/10.1109/ssdm.1996.506060
https://doi.org/10.1109/ssdm.1996.506060
Publikováno v:
ICDE
University of Manchester-PURE
University of Manchester-PURE
In recent years, research on distributing databases over networks has become increasingly important. In this paper, we concentrate on the issues of the interoperability of heterogeneous DBMSs and enforcing integrity across a multi-database made in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b1c4ae4884135f2db4276951134cec7
https://doi.org/10.1109/icde.1997.581737
https://doi.org/10.1109/icde.1997.581737
Publikováno v:
SSDBM
Transforming queries for efficient execution is particularly important in federated database systems since a more efficient execution plan can require many fewer data requests to be sent to the component databases. Also, it is important to do as much
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b841d10bb7015f795d2845dbf2defcda
https://doi.org/10.1109/ssdm.2001.938546
https://doi.org/10.1109/ssdm.2001.938546
Publikováno v:
UIDIS
We have implemented a Java-based visual interface for P/FDM which has at its centre a graphical representation of the database schema. Users construct queries by clicking on entity classes and relationships in the schema diagram and constraining the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f927e0a726eebee900c5b2bf9b9a17b0
https://doi.org/10.1109/uidis.1999.791462
https://doi.org/10.1109/uidis.1999.791462
Autor:
A. Leveque, J.M. Scarr, E. Pickup, P.M.D. Gray, L. Lyons, P.J. Negus, A.A.Z. Ahmad, G. B. Chadwick, C. A. Wilkinson, R. L. Sekulin, I.O. Skillicorn, I.S. Hughes, W.M.R. Blair, J. H. Mulvey, W. T. Davies, A.R. Atherton, C.M. Fisher, A.M. Segar, L.K. Rangan, D.E. Lawrence, L. Celnikier, J.G. Loken, R. M. Turnbull, A.L. Grant, S. Misbahuddin, J.H. Field, S. Baker, A. J. Oxley, M. Ville
Publikováno v:
Physics Letters. 18:69-72
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ef630b464edfb75a275d7d1dca425b3
https://doi.org/10.1016/0031-9163(65)90033-8
https://doi.org/10.1016/0031-9163(65)90033-8
Autor:
I.S. Hughes, L.K. Rangan, A.A.Z. Ahmad, C.M. Fisher, C. A. Wilkinson, G. B. Chadwick, A.L. Grant, D.E. Lawrence, J.H. Field, S. Baker, J. H. Mulvey, W.M.R. Blair, N. Haque, S. Misbahuddin, A. J. Oxley, R.H. Turnbull, L. Celnikier, J.G. Loken, J.M. Scarr, W. T. Davies, D. G. Scotter, I.O. Skillicorn, A.R. Atherton, A.M. Segar, E. Pickup, P.M.D. Gray, L. Lyons, P.J. Negus, B. Musgrave, H.J. Sherman
Publikováno v:
Physics Letters. 14:338-342
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::952964767958118a4b3bd1771b228e7c
https://doi.org/10.1016/0031-9163(65)90230-1
https://doi.org/10.1016/0031-9163(65)90230-1