Query graph (QG) is an easy-to-use visual query language which facilitates formulating a query. Unlike relational databases, in object-oriented databases (OODBs), the basic entity of QG, i.e. a class, may consist of s...
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In the new applications such as OIS, CAD/CAM, and AI, it is required to support not only fixed Is-A and Part-Of relationships but also various dynamic relationships including complicate constraints. However, existing ...
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This paper discusses function materialization for features of objects in object-oriented databases, and identifies its role in design databases. Drawbacks with the present approaches are discussed and a new approach t...
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Many applications of object-oriented Database systems demand high performance and require longer duration transactions. These requirements are contrary to one another. Two trends in modern systems can help improve the...
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object-oriented databases (OODBs) are believed to more naturally reflect the behavior and organization of real world objects. However, OODBs are mostly concerned about only the static aspects of object modeling. While...
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In this article, we propose a method of object identification in the state of fuzzy object-oriented database schema based on different notions of fuzzy object functional dependencies. Here, fuzzy object functional dep...
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It is claimed that object-oriented databases overcome many of the limitations of the relational data model especially by generalizing the notion of object identification. A clear distinction between objects and values...
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Recently, a new access method, the Hierarchical-Tree (H-tree) was proposed as an efficient access method for object-oriented database that supports superclass-subclass relationship. We show that, the H-tree indexing s...
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Research on IPSE architectures has discussed the benefits of a centralized repository at some length. Such a repository has to not only offer enhanced data management services but also provide for mechanisms to assist...
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Subsumption between queries is a valuable information, e.g., for semantic query optimization. We approach the subsumption problem in the setting of object-oriented databases, and find that reasoning techniques from Ar...
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