虚弱
发表于 2025-3-28 18:25:48
Realization of nested relation interfaces for relational and network databases,ition of a relation. Nested relation approach is another way to reduce such redundancy. Since all the facts are shown in one relation, this method is suitable for user interface. In order to get a proper nested relation, we must consider the form defined by the user as well as dependencies (in relat
贪心
发表于 2025-3-28 19:26:31
An approach to manage large inheritance networks within a DBS supporting nested relations, of the knowledge base contents In this paper we present an approach for managing structured inheritance networks in an andvanced database system. Actually, we develop concepts for handling a KL-ONE like formalisms in an extended relational database system supporting nested relations. Of special imp
歌剧等
发表于 2025-3-29 00:23:59
On the normalization in Nested Relational Databases,rity constraints we consider are functional and multivalued dependencies. We define a normal form for nested relations, called nested normal form, utilizing the functional and multivalued dependencies, and give an algorithm to a obtain such a database scheme. In the nested normal form the relations
DEVIL
发表于 2025-3-29 06:24:20
Complex objects modeling: An entity-relationship approach,equently, either new models are developed, or existing ones are extended to better respond to this requirement. Current proposals in the latter category are mainly based on the relational approach (with, as major outcome, the NF. family of models) or on functional models like DAPLEX. This paper inte
同音
发表于 2025-3-29 10:23:46
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travail
发表于 2025-3-29 15:03:56
978-3-540-51171-7Springer-Verlag Berlin Heidelberg 1989
高度表
发表于 2025-3-29 18:18:03
Nested Relations and Complex Objects in Databases978-3-540-46175-3Series ISSN 0302-9743 Series E-ISSN 1611-3349
BILL
发表于 2025-3-29 22:19:56
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CHAR
发表于 2025-3-30 03:47:03
https://doi.org/10.1007/3-540-51171-7database; database machine; information management; relational database
宪法没有
发表于 2025-3-30 06:06:17
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