拱墙
发表于 2025-3-28 17:29:02
Guillaume Cottenceau,Dominique Désérableall data sources in the network, where available. At the same time, data sources should have limited restrictions on how to organize their data. If a global schema is not available for such a network, query processing is strongly based on the existence of (hard to maintain) mapping rules between pai
DAUNT
发表于 2025-3-28 22:13:51
Lecture Notes in Computer Sciences of the business enterprise. In these systems, it is often necessary to combine the information of all the organization’s databases in order to perform analysis and make decisions about the global operation. This is the case of Data Warehouse Systems. From a conceptual point of view, a Data Warehou
Spangle
发表于 2025-3-28 22:58:08
Milan Vispoel,Aisling J. Daly,Jan M. Baetensed by the workload experienced by the system. In this paper, we propose a framework for materialized view selection that exploits a data mining technique (clustering), in order to determine clusters of similar queries. We also propose a view merging algorithm that builds a set of candidate views, as
同步信息
发表于 2025-3-29 05:18:10
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debacle
发表于 2025-3-29 08:37:37
https://doi.org/10.1007/978-3-031-14926-9plete and unambiguous specification can be achieved by traditional functional dependencies for relational schemata, use of the traditional formal notation in practice is rare. We propose an alternative way: designing or surveying the properties of a non-binary relationship among object classes or at
博爱家
发表于 2025-3-29 15:03:02
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Albinism
发表于 2025-3-29 18:02:44
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禁令
发表于 2025-3-29 22:12:34
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含铁
发表于 2025-3-30 00:48:17
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DEMN
发表于 2025-3-30 05:57:09
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