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Computers and Operations Research
Efficiently updating materialized views
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
A performance analysis of view materialization strategies
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
Data allocation in distributed database systems
ACM Transactions on Database Systems (TODS)
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Journal of Systems and Software
A model for designing distributed database systems
Information and Management
Data caching issues in an information retrieval system
ACM Transactions on Database Systems (TODS)
A performance study of three high availability data replication strategies
Distributed and Parallel Databases - Selected papers from the first international conference on parallel and distributed information systems
Seven good reasons for mobile agents
Communications of the ACM
Routing in telecommunications networks with ant-like agents
IATA '98 Proceedings of the second international workshop on Intelligent agents for telecommunication applications
Comparative Models of the File Assignment Problem
ACM Computing Surveys (CSUR)
Updating Distributed Materialized Views
IEEE Transactions on Knowledge and Data Engineering
Quasi-Copies: Efficient Data Sharing for Information Retrieval Systems
EDBT '88 Proceedings of the International Conference on Extending Database Technology: Advances in Database Technology
Extending Logging for Database Snapshot Refresh
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
Database Partitioning in a Cluster of Processors
VLDB '83 Proceedings of the 9th International Conference on Very Large Data Bases
Mobile Agents: Are They a Good Idea?
MOS '96 Selected Presentations and Invited Papers Second International Workshop on Mobile Object Systems - Towards the Programmable Internet
Mobile Agents for Adaptive Routing
HICSS '98 Proceedings of the Thirty-First Annual Hawaii International Conference on System Sciences-Volume 7 - Volume 7
Context management and its applications to distributed transactions
ICDCS '96 Proceedings of the 16th International Conference on Distributed Computing Systems (ICDCS '96)
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This paper describes a strategy for actively replicating and updating content for electronic commerce. Active replication and updating of content is achieved by intelligent agents (IA) using a time-invariant fragmentation approach to partitioning and replicating data in a distributed computing environment. Taking into account the time-sensitivity property of data, IAs derive time-invariant fragments for their respective nodes from the query history. A time-invariant fragment (TIF) is that portion of the database whose values do not change during a specified time interval. The algorithm that IAs use in creating TIFs for each node, for a given time interval, is presented. The active replication approach is compared with three other approaches, full-replication, nonreplication, and materialized view, in terms of data transmission costs. Results indicate that the active approach can be most effective for electronic commerce because of the high percentage of modification queries, the large size of the network, and the great number of transactions.