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On the Expressive Power of Logics on Constraint Databases with Complex Objects
《Journal of Computer Science & Technology》2019年第4期795-817,共23页Hong-Cheu Liu Jixue Liu 
We extend the constraint data model to allow complex objects and study the expressive power of various query languages over this sort of constraint databases.The tools we use come in the form of collapse results which...
关键词：constraint database monadic SECOND-ORDER LOGIC natural-active COLLAPSE RAMSEY property O-MINIMALITY structure 
On the Isolation Property over a Database Domain
《Journal of Mathematics and System Science》2013年第2期96-100,共5页Bektur S. Baizhanov Beibut Sh. Kulpesho 
The authors consider relational databases organized over an ordered domain with some additional relations - a typical example is the ordered domain of rational numbers together with the operation of addition. In the f...
关键词：O-MINIMALITY database query circularly ordered domain. 
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