3-L Model: A Model for Checking the Integrity Constraints of Mobile Databases
نویسندگان
چکیده
منابع مشابه
A Model for Checking the Integrity Constraints of Mobile Databases
In this paper we propose a model for checking integrity constraints of mobile databases called Three-Level (3-L) model, wherein the process of constraint checking to maintain the consistent state of mobile databases is realized at three different levels. Sufficient and complete tests proposed in the previous works together with the idea of caching relevant data items for checking the integrity ...
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15 صفحه اولIntegrity Constraints Checking In Deductive Databases
We propose a new method for integrity checking in deductive databases. The method augments a database with a set of transition and internal events rules,which explicitly define the insertions and deletions induced by a database update. Standard SLDNF resolution can then be used to check satisfaction of integrity constraints. The method has the full power of the methods developed so far, and its...
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Conclusion We have developed the sustained model semantics for query answering and integrity checking in deductive databases. Several points have motivated this endeavor. First, it appeared as disturbing that, while most of today's semantics for query answering are three-valued, most semantics in the literature for answering the query if integrity is satisfied or violated are two-valued. After ...
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ژورنال
عنوان ژورنال: Journal of Computing Science and Engineering
سال: 2009
ISSN: 1976-4677
DOI: 10.5626/jcse.2009.3.4.260