FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2337441861> ?p ?o ?g. }

• W2337441861 abstract "In recent years, there has been a dramatic growth in the number of publicly accessible databases on the Internet and all indicators suggest that this growth should continue in the years to come. Unfortunately, retrieving information from these databases is not easy for several reasons. The first complication is distribution. Not every query can be answered by the data in a single database. Useful relations may be broken into fragments that are distributed among distinct databases. In horizontal fragmentation, the rows of a database are split across multiple databases. In vertical fragmentation, the columns are split. Distributed databases can exhibit mixtures of these types of fragmentation A second complication in database integration is heterogeneity. This heterogeneity may be notational or conceptual. Notational heterogeneity concerns access languages and protocols. One source may require SQL while another requires OQL and a third uses an ad hoc notation. This sort of heterogeneity can usually be handled through commercial products (such as the Sybase Openserver). However, even if we assume that all databases use a standard language and protocol, there can still be conceptual heterogeneity, i.e., differences in the relational schema and vocabulary. Distinct databases may use different words to refer to the same concept andor they may use the same word to refer to different concepts. Reassembling the distributed fragments of a database in the face.of heterogeneity is doubly difficult. Mediation is a technology which inserts intelligent processing modules, called mediators, between servers and clients to provide value-added processing. A number of contractors have now the capability to build the required application interfaces and to implement the architecture. The number of platforms and languages varies and there is some discussion on style, as preferring fat versus thin mediators. They interact with their customers to acquire domain knowledge. As more implementations enter practice, the infrastructure grows and we expect that mediators can be installed rapidly and be maintained by their owners. The main goal of this research is to transform the problem of answering queries using views into a semantic query optimization problem (which we called semantic query transformation since it interleaves the query planning and query execution processes) and to show that additional semantic knowledge in the form of integrity constraints can help in generating more efficient query plans suitable for data integration systems over network-bound, autonomous data sources ranging from conventional databases on the LAN or intranet to Web-based sources (both HTML and XML) across the Internet. In doing so, four derived goals were identified: to present a language for the modeling of the contents of the information sources, to propose algorithms, which transform answering queries using views problem into a semantic query optimization problem, to extend the algorithms to find the maximally contained query plans in the presence of hnctional dependencies in the world schema and to test the completeness and soundness of the algorithms." @default.
• W2337441861 created "2016-06-24" @default.
• W2337441861 creator A5002151936 @default.
• W2337441861 creator A5016261174 @default.
• W2337441861 date "2001-01-01" @default.
• W2337441861 modified "2023-09-24" @default.
• W2337441861 title "Semantic query transformation for the intelligent integration of information sources" @default.
• W2337441861 hasPublicationYear "2001" @default.
• W2337441861 type Work @default.
• W2337441861 sameAs 2337441861 @default.
• W2337441861 citedByCount "5" @default.
• W2337441861 countsByYear W23374418612017 @default.
• W2337441861 crossrefType "dissertation" @default.
• W2337441861 hasAuthorship W2337441861A5002151936 @default.
• W2337441861 hasAuthorship W2337441861A5016261174 @default.
• W2337441861 hasConcept C135598885 @default.
• W2337441861 hasConcept C23123220 @default.
• W2337441861 hasConcept C2779599972 @default.
• W2337441861 hasConcept C41008148 @default.
• W2337441861 hasConcept C48044578 @default.
• W2337441861 hasConcept C510870499 @default.
• W2337441861 hasConcept C5655090 @default.
• W2337441861 hasConcept C70061542 @default.
• W2337441861 hasConcept C77088390 @default.
• W2337441861 hasConceptScore W2337441861C135598885 @default.
• W2337441861 hasConceptScore W2337441861C23123220 @default.
• W2337441861 hasConceptScore W2337441861C2779599972 @default.
• W2337441861 hasConceptScore W2337441861C41008148 @default.
• W2337441861 hasConceptScore W2337441861C48044578 @default.
• W2337441861 hasConceptScore W2337441861C510870499 @default.
• W2337441861 hasConceptScore W2337441861C5655090 @default.
• W2337441861 hasConceptScore W2337441861C70061542 @default.
• W2337441861 hasConceptScore W2337441861C77088390 @default.
• W2337441861 hasLocation W23374418611 @default.
• W2337441861 hasOpenAccess W2337441861 @default.
• W2337441861 hasPrimaryLocation W23374418611 @default.
• W2337441861 hasRelatedWork W103785745 @default.
• W2337441861 hasRelatedWork W120743157 @default.
• W2337441861 hasRelatedWork W1964538083 @default.
• W2337441861 hasRelatedWork W1983953047 @default.
• W2337441861 hasRelatedWork W1984067531 @default.
• W2337441861 hasRelatedWork W200667648 @default.
• W2337441861 hasRelatedWork W2099367286 @default.
• W2337441861 hasRelatedWork W2140182861 @default.
• W2337441861 hasRelatedWork W2165182301 @default.
• W2337441861 hasRelatedWork W2166434491 @default.
• W2337441861 hasRelatedWork W2187569643 @default.
• W2337441861 hasRelatedWork W2537039044 @default.
• W2337441861 hasRelatedWork W2889085197 @default.
• W2337441861 hasRelatedWork W2945364777 @default.
• W2337441861 hasRelatedWork W2986698395 @default.
• W2337441861 hasRelatedWork W3011562804 @default.
• W2337441861 hasRelatedWork W3096315831 @default.
• W2337441861 hasRelatedWork W65524025 @default.
• W2337441861 hasRelatedWork W79166173 @default.
• W2337441861 hasRelatedWork W2009687818 @default.
• W2337441861 isParatext "false" @default.
• W2337441861 isRetracted "false" @default.
• W2337441861 magId "2337441861" @default.
• W2337441861 workType "dissertation" @default.