A translation approach to portable ontology specifications
Knowledge Acquisition - Special issue: Current issues in knowledge modeling
Query caching and optimization in distributed mediator systems
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
The TSIMMIS Approach to Mediation: Data Models and Languages
Journal of Intelligent Information Systems - Special issue: next generation information technologies and systems
Answering recursive queries using views
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Principles of distributed database systems (2nd ed.)
Principles of distributed database systems (2nd ed.)
Chord: A scalable peer-to-peer lookup service for internet applications
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
A scalable content-addressable network
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
Making ontologies work for resolving redundancies across documents
Communications of the ACM - Ontology: different ways of representing the same concept
What Are Ontologies, and Why Do We Need Them?
IEEE Intelligent Systems
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Piazza: data management infrastructure for semantic web applications
WWW '03 Proceedings of the 12th international conference on World Wide Web
The hyperion project: from data integration to data coordination
ACM SIGMOD Record
The Piazza Peer Data Management System
IEEE Transactions on Knowledge and Data Engineering
Data sharing in the Hyperion peer database system
VLDB '05 Proceedings of the 31st international conference on Very large data bases
Database Conceptual Schema Matching
Computer
Querying the internet with PIER
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Semantic query routing in senpeer, a P2P data management system
NBiS'07 Proceedings of the 1st international conference on Network-based information systems
Data management in large-scale p2p systems
VECPAR'04 Proceedings of the 6th international conference on High Performance Computing for Computational Science
Using ontologies for semantic query optimization of XML database
KDXD'06 Proceedings of the First international conference on Knowledge Discovery from XML Documents
Ontology-Based Method for Schema Matching in a Peer-to-Peer Database System
BNCOD 26 Proceedings of the 26th British National Conference on Databases: Dataspace: The Final Frontier
Indexing source descriptions based on defined classes
Proceedings of the Fourteenth International Database Engineering & Applications Symposium
Resource discovery considering semantic properties in data grid environments
Globe'11 Proceedings of the 4th international conference on Data management in grid and peer-to-peer systems
Hi-index | 0.00 |
In Peer-to-Peer environments, the absence of a global schema makes locating data sources a real problem. Semantic and structural heterogeneity of local schemas prevent the localization phase to find relevant data sources for a given SQL query. Useless information obtained during this phase could not only lead to incorrect answers but also it is expensive in terms of resource consumption. In this paper, we propose a method integrating domain ontology into Chord protocol. This integration provides comprehensive data exchange while carrying out efficient data source localization. Before the localization phase, the terms of the given SQL query must be written according to the domain ontology which forms the only interface to interact between peers. Chord protocol is extended by Structure Indexes that describe the relation structures. The proposed method allows extended Chord protocol to select relevant data sources and to avoid useless information. We present simulation results showing the feasibility of our method and its benefits.