Advances in Fuzzy Object-Oriented Databases: Modeling and by Zongmin Ma

By Zongmin Ma

Amassing the most recent examine effects from the best researchers within the box of fuzzy object-oriented databases, Advances in Fuzzy Object-Oriented Databases: Modeling and purposes supply a unmarried resource for present examine and functional purposes in fuzzy object-oriented databases. This e-book comprises significant features of fuzzy object-oriented database modeling - conceptual, logical and actual, in addition to information of implementations and purposes. Readers will take advantage of a whole knowing of the notions, recommendations, and strategies with regards to the learn and advancements of fuzzy object-oriented databases. This publication can act as a place to begin and a reference for his or her examine and advancements and stimulate the curiosity within the box of fuzzy object-oriented databases and additional advertise the learn within the box.

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The object identifier oid is used to refer to the (state of the) object. The set of Copyright © 2005, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. 22 de Tré & de Caluwe object names N can be empty. The set of all the instances of an object type t ∈ Tobject is written as Vtinstance. If t is a subtype of another object type tˆ, then Vtinstance ⊆ Vtˆ instance. The extent of an object type t is written as Vtextent and is defined as the set of all the persistent instances of t within a particular database.

If {id1,id2,…,id n} ⊂ ID is the set of the identifiers of the selected characteristics of the type t of a given object scheme os = [id,t,M,C t ], then the operation Π(os,{id 1,id 2,…,idn}) results in a new object scheme: Π(os,{id 1,id 2,…,idn}) = os' = [id',t',M',Ct' ] where • The object type t' has as characteristics, the characteristics identified by the identifiers {id1,id2,…,idn}. • The fuzzy set of specific constraints Ct' consists of the single-type dependent constraints (with associated membership grades) that were Copyright © 2005, Idea Group Inc.

1996). Fuzzy logic = Computing with words. IEEE Transactions on Fuzzy Systems, 4(2), 103–111. Copyright © 2005, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. A Constraint Based Fuzzy Object Oriented Database Model 45 Zadeh, L. A. (1997). Toward a theory of fuzzy information granulation and its centrality in human reasoning and fuzzy logic. Fuzzy Sets and Systems, 90(2), 111–127. Zadeh, L. A. (1999). From computing with numbers to computing with words — from manipulation of measurements to manipulation of perceptions.

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Advances in Fuzzy Object-Oriented Databases: Modeling and by Zongmin Ma
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