indemnify
发表于 2025-3-26 23:03:04
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Demulcent
发表于 2025-3-27 04:37:38
Meta object management and its application to database evolution,s, realizing incremental changes to the database schema and their propagation to data instances. We show, how each schema update of a given taxonomy is realized by direct updating of schema objects, and how this approach can be used to build a complete tool for database evolution.
联合
发表于 2025-3-27 07:55:51
Lecture Notes in Computer Sciencehttp://image.papertrans.cn/e/image/311661.jpg
嘲弄
发表于 2025-3-27 11:13:58
https://doi.org/10.1007/3-540-56023-8Constraint; Data Modeling; Database Applications; Database Design; Database Management; Datenbank-Anwendu
侧面左右
发表于 2025-3-27 14:59:04
Diffraction Contrast in TEM Images,omplete lifecycle of a database as an interface model. For this purpose, the concepts of the ER-model need to be theoretically wellfounded. The aim of this paper is to show how the theoretical basis of one of the most important class of integrity constraints can be constructed and then used for the
不法行为
发表于 2025-3-27 19:44:18
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Oration
发表于 2025-3-27 22:03:07
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abysmal
发表于 2025-3-28 04:57:51
Carrier Transmission of Signals,e is stepwise so that clustered designs on different levels are achieved. Parenthood connections are used to build increasingly complex entity sets out of primitive ones. No semantical extensions of the original ER model are necessary because these connections are identified by their cardinalities a
Intact
发表于 2025-3-28 07:21:53
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该得
发表于 2025-3-28 12:14:04
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