公款
发表于 2025-3-21 16:34:57
书目名称Semantics in Databases影响因子(影响力)<br> http://figure.impactfactor.cn/if/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases影响因子(影响力)学科排名<br> http://figure.impactfactor.cn/ifr/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases网络公开度<br> http://figure.impactfactor.cn/at/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases网络公开度学科排名<br> http://figure.impactfactor.cn/atr/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases被引频次<br> http://figure.impactfactor.cn/tc/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases被引频次学科排名<br> http://figure.impactfactor.cn/tcr/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases年度引用<br> http://figure.impactfactor.cn/ii/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases年度引用学科排名<br> http://figure.impactfactor.cn/iir/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases读者反馈<br> http://figure.impactfactor.cn/5y/?ISSN=BK0864735<br><br> <br><br>书目名称Semantics in Databases读者反馈学科排名<br> http://figure.impactfactor.cn/5yr/?ISSN=BK0864735<br><br> <br><br>
chapel
发表于 2025-3-21 23:52:57
The evolving algebra semantics of class and role hierarchies,vice feature of object-oriented data models proposed recently by different authors: role hierarchies. As opposed to traditional class hierarchies, role hierarchies allow objects to dynamically acquire multiple independent types.
锉屑
发表于 2025-3-22 02:22:27
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Conjuction
发表于 2025-3-22 05:40:28
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PURG
发表于 2025-3-22 10:00:50
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严厉谴责
发表于 2025-3-22 16:01:33
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变形词
发表于 2025-3-22 20:25:33
Semantics in spatial databases,atial databases are under consideration. A semantics for both data models is formally defined in terms of finite representations of spatial databases in the data models. We also present languages to query spatial databases in both models and briefly investigate their expressiveness.
字形刻痕
发表于 2025-3-23 00:50:36
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不规则
发表于 2025-3-23 01:56:29
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jungle
发表于 2025-3-23 09:37:59
An informal and efficient approach for obtaining semantic constraints using sample data and natural The efficiency and correctness of a database depends among other things on knowledge about database semantics because semantic constraints are the prerequisite for normalization and restructuring operations. Acquisition of semantic constraints remains one of the bottlenecks in database design becau