Logic, algebra and databases
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ACM Transactions on Database Systems (TODS)
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Management Science
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IEEE Transactions on Knowledge and Data Engineering
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IEEE Transactions on Knowledge and Data Engineering
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IEEE Transactions on Knowledge and Data Engineering
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VLDB '86 Proceedings of the 12th International Conference on Very Large Data Bases
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VLDB '91 Proceedings of the 17th International Conference on Very Large Data Bases
Proceedings of the ninth international conference on Information and knowledge management
Evaluation of Materialized View Indexing in Data Warehousing Environments
DaWaK 2000 Proceedings of the Second International Conference on Data Warehousing and Knowledge Discovery
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Data warehousing and web engineering
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In intelligent database systems, knowledge-directed inference often derives large amounts of data, and the efficiency of query processing in these systems depends upon how the derived data are maintained. This paper focuses on situations where the rule is conditional on a join of multiple data objects (relations) and the rule-derived data are materialized to reduce the overall query processing costs. We develop an indexing technique based on a unique construct called join pattern relation. Several pattern redundancy reduction methods are also introduced to minimize the overhead cost of join indexing.