hector
发表于 2025-3-21 19:36:51
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实施生效
发表于 2025-3-22 00:18:35
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geometrician
发表于 2025-3-22 04:02:25
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CLASP
发表于 2025-3-22 06:28:32
Copyright, Property and the Social Contractne of the several versions, with varying syntax and semantics, of the Entity-Relationship (ER) model. In the research community as well as in industry, it is common knowledge that the temporal aspects of the mini-world are important, but are also difficult to capture using the ER model. Not surprisi
注意到
发表于 2025-3-22 10:37:49
Moralism, Moral Individualism and Testimonyses the problem of redundancy of object retrieval in a multidatabase setting. We present the materialisation rules we have used for supporting data integration in a heterogeneous database environment. The materialisation rules are capable of directing the global query processor to combine data from
Torrid
发表于 2025-3-22 12:58:00
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Torrid
发表于 2025-3-22 17:21:24
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Wernickes-area
发表于 2025-3-22 23:47:43
Suspect Notions and the Concept Police,nding views may be outdated. Hence, the maintenance of DW views is crucial for the currency of information. In this paper, we propose a novel method to efficiently self-maintain DW views that contain select-project-joins over relations modelled in a star schema. Specifically, our method avoids compu
以烟熏消毒
发表于 2025-3-23 01:51:47
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ACME
发表于 2025-3-23 08:46:24
Chris M. Roelfsema,Stuart R. Phinn literature, sampling has been proposed to evaluate queries approximately by using only a subset of the original data. Unfortunately, most of these methods consider either only certain problems arising due to the use of samples in databases (e.g. data skew) or only join operations involving multiple