Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Barry G. T. Lowden"'
Autor:
Jerome Robinson, Barry G. T. Lowden
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540229360
DEXA
DEXA
Semantic query optimisation uses knowledge about properties of the data, represented as a set of subset descriptor rules, to transform a query into another form that can be executed in a more efficient manner but still yields the same result as the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e77f0d14efb71a57d5ff851157d38e7f
https://doi.org/10.1007/978-3-540-30075-5_38
https://doi.org/10.1007/978-3-540-30075-5_38
Autor:
Barry G. T. Lowden, Ayla Sayli
Publikováno v:
IDEAS
Semantic query optimisation is a comparatively recent approach for the transformation of a given query into equivalent alternative queries using matching rules in order to select an optimum query based on the costs of executing these alternative quer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f5d0e23a77d999a0a11ed6652b34596
https://doi.org/10.1109/ideas.1997.625701
https://doi.org/10.1109/ideas.1997.625701
Autor:
Barry G. T. Lowden, Jerome Robinson
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540441267
DEXA
DEXA
Semantic query optimisation is the process by which a user query is transformed into a set of alternative queries each of which returns the same answer as the original. The most efficient of these alternatives is then selected, for execution, using s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbb095201971aae126aa2ed9431ea9c1
https://doi.org/10.1007/3-540-46146-9_58
https://doi.org/10.1007/3-540-46146-9_58
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540425274
DEXA
DEXA
A fundamental problem to be solved in systems that derive rules from database tables to use in query optimisation is the workload involved. If the data server has to do the work it can interfere with query processing and cause slower query answering,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::757c520a4ea63af9d9807c6842282d4d
https://doi.org/10.1007/3-540-44759-8_87
https://doi.org/10.1007/3-540-44759-8_87
Autor:
Jerome Robinson, Barry G. T. Lowden
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540410942
ISMIS
ISMIS
The conventional use of databases is commonly restricted to the retrieval of factual data in the form of tuples or records. However most databases also contain metadata in the form of integrity rules which can provide a rich source of additional info
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6da157e9cd854a5127d6bc7c6c22f02
https://doi.org/10.1007/3-540-39963-1_27
https://doi.org/10.1007/3-540-39963-1_27
Autor:
Barry G. T. Lowden, Jerome Robinson
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540679783
DEXA
DEXA
In 'Associative Caching' each client computer keeps a copy of its query result sets in its own local database. The purpose is to reduce the size and frequency of queries to the remote data server accessed by wide-area network. For each new query the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27db955e39c69ed5987c98d032de1c02
https://doi.org/10.1007/3-540-44469-6_50
https://doi.org/10.1007/3-540-44469-6_50
Autor:
Barry G. T. Lowden, Jerome Robinson
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540659655
ISMIS
ISMIS
Semantic Query Optimisation makes use of the semantic knowledge of a database (rules) to perform query transformation. Rules are normally learned from former queries fired by the user. Over time, however, this can result in the rule set becoming very
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0eef8606a125d5ec141bd475aaecc51
https://doi.org/10.1007/bfb0095119
https://doi.org/10.1007/bfb0095119
Autor:
Barry G. T. Lowden, Jerome Robinson
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783540664482
DEXA
DEXA
The last few years have seen an increasing trend to use database technology in more innovative and diverse application domains which places even greater demands on DBMS for accuracy of information. The provision of correct and reliable data is theref
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::701e94f7a0604ee22507462c6306dd99
https://doi.org/10.1007/3-540-48309-8_38
https://doi.org/10.1007/3-540-48309-8_38
Autor:
Jerome Robinson, Barry G. T. Lowden
Publikováno v:
Advances in Intelligent Data Analysis Reasoning about Data ISBN: 9783540633464
IDA
IDA
Data analysis is needed in connection with query processing, to produce data summary information in the form of rules or assertions that allow semantic query optimisation or direct query answering without consulting the data itself. The goal of an in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21b7bca1e898b54ca7937435a5de83ac
https://doi.org/10.1007/bfb0052861
https://doi.org/10.1007/bfb0052861
Autor:
Barry G. T. Lowden, Raymond Turner
Publikováno v:
The Computer Journal. 28:162-169
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::189aa58da7ac5f80a4d03298197d845a
https://doi.org/10.1093/comjnl/28.2.162
https://doi.org/10.1093/comjnl/28.2.162