object-oriented databases has rich semantics, which enables the definition of various relationships among objects. Sharing levels and composition types necessitate the definition of whether, and to which extent, shoul...
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object-oriented database systems (ooDBMSs) are supposed to offer at least the functionality available in commercial relational DBMSs of today. One important consequence of this is that they have to provide a separatio...
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In this paper we introduce DOODLE, a new visual and declarative language for object-oriented databases. The main principle behind the language is that it is possible to display and query the database with arbitrary pi...
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ISBN:
(纸本)0897915216
In this paper we introduce DOODLE, a new visual and declarative language for object-oriented databases. The main principle behind the language is that it is possible to display and query the database with arbitrary pictures. We allow the user to tailor the display of the data to suit the application at hand or her preferences. We want the user-defined visualizations to be stored in the database, and the language to express all kinds of visual manipulations. For extendibility reasons, the language is object-oriented. The semantics of the language is given by a well-known deductive query language for object-oriented databases. We hope that the formal basis of our language will contribute to the theoretical study of database visualizations and visual query languages, a subject that we believe is of great interest, but largely left unexplored.
This paper proposed a new clustering technique for an object-oriented database mangement system. The technique is dynamic and employs a reduced set of statistics to minimize statistics collection overhead. Clustering ...
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Regardless of all the inherent features, object-oriented databases (OODBs) are unable to come up with provable security. The emergence of diversified computing paradigms like Grid & Cloud Computing and Online Soci...
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This paper addresses the problem of semantic query reformulation in the context of object-oriented deductive databases. It extends the declarative object-oriented specifications of F-logic proposed by Kifer and Lausen...
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Several approaches have been taken to incorporate integrity constraints into the class definitions of an object-oriented (OO) database. In this work, we generate constraint checks automatically in the basic methods of...
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Partial replication is a well established technique for relational databases. The creation of partial replica of object-oriented databases is more complex due to the richer type schema and object references. We presen...
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The opportunity to use database systems by computer non-professionals has increased recently, and various systems enabling them to use databases easily have already been presented. Several approaches for schema defini...
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This paper presents a formal approach to support schema integration in objectorienteddatabases. The basis of the approach is a subclass order, which is defined in terms of a weak subtype relation on underlying types ...
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