Titlebook: Semantics in Databases; Bernhard Thalheim,Leonid Libkin Conference proceedings 1998 Springer-Verlag Berlin Heidelberg 1998 constraint data

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書目名稱Semantics in Databases影響因子(影響力)




書目名稱Semantics in Databases影響因子(影響力)學(xué)科排名




書目名稱Semantics in Databases網(wǎng)絡(luò)公開度




書目名稱Semantics in Databases網(wǎng)絡(luò)公開度學(xué)科排名




書目名稱Semantics in Databases被引頻次




書目名稱Semantics in Databases被引頻次學(xué)科排名




書目名稱Semantics in Databases年度引用




書目名稱Semantics in Databases年度引用學(xué)科排名




書目名稱Semantics in Databases讀者反饋




書目名稱Semantics in Databases讀者反饋學(xué)科排名

chapel

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.

銼屑

Conjuction

PURG

嚴(yán)厲譴責(zé)

變形詞

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

不規(guī)則

jungle

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