Freenet: a distributed anonymous information storage and retrieval system
International workshop on Designing privacy enhancing technologies: design issues in anonymity and unobservability
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
Data integration: a theoretical perspective
Proceedings of the twenty-first ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Active Rules in Database Systems
Active Rules in Database Systems
Pastry: Scalable, Decentralized Object Location, and Routing for Large-Scale Peer-to-Peer Systems
Middleware '01 Proceedings of the IFIP/ACM International Conference on Distributed Systems Platforms Heidelberg
Answering queries using views: A survey
The VLDB Journal — The International Journal on Very Large Data Bases
Mapping data in peer-to-peer systems: semantics and algorithmic issues
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
A scalable content-addressable network
A scalable content-addressable network
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
Local relational model: a logical formalization of database coordination
CONTEXT'03 Proceedings of the 4th international and interdisciplinary conference on Modeling and using context
View-based query processing: on the relationship between rewriting, answering and losslessness
ICDT'05 Proceedings of the 10th international conference on Database Theory
Peer coordination through distributed triggers
Proceedings of the VLDB Endowment
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Managing coordination among peer databases is at the core of research in peer data management systems. The Hyperion project addresses peer database coordination through Event-Condition-Action (ECA) rules. However, peer databases are intended for non-technical end users, such as a receptionist at a doctor’s office or an assistant pharmacist. Such users are not expected to know a technically demanding language for expressing ECA rules that are appropriate for coordinating their respective databases. Accordingly, we propose to offer a library of ”standard” rules for coordinating two or more types of peer databases. These rules are defined in terms of assumed standard schemas for the peer databases they coordinate. Once two acquainted peers select such a rule, it can be instantiated so that it can operate for their respective databases. In this paper, we propose a mechanism for rewriting given standard rules into rules expressed in terms of the schemas of the two databases that are being coordinated. The rewriting is supported by Global-As-View mappings that are supposed to pre-exist between specific schemas and standard ones. More specifically, we propose a standard rule rewriting algorithm which we have implemented and evaluated.