Titlebook: Database Reengineering and Interoperability; To-yat Cheung,Joseph Fong,Brian Siu Book 1996 Plenum Press, New York 1996 DBMS.Management.dat

肥料

Semantic Query Transformationroach assumes the availability of an object-oriented model based schema and a domain knowledge of the local context and an object-oriented model based schema of the target context. An informal description of the transformation process is presented with an illustrative example.

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An Object-Oriented Approach to Query Interoperability global integration is called interoperable systems, which is the subject matter of this research. These systems, as defined in [.] have limited global functions which consists of mainly simple data exchange using standardized communication protocols. In addition, these systems do not support full database functionality.

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Eliminating the Impedance Mismatch Between Relational and Object-Oriented Systemsindustry for many years.. On the other hand, object-oriented programming languages become more acceptable by software developers. It is therefore important to develop appropriate facilities in an object-oriented programming language for accessing and programming the relational and the extended relational database systems.

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Handling Terabyte Databases on Open Systems, and a borrowing of ideas from the more experienced mainframe world..This paper outlines the type of user, and usage, which is pushing UNIX databases to these dimensions, and the practical solutions which can be provided for the reliable and timely handling of the issues associated with data volumes of this magnitude.

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Cumulus

https://doi.org/10.1007/978-3-0348-8510-2 by generalization of existing ones since these are expensive and extremely time consuming operations. Second to avoid reorganizations by reducing schema transformations by using generalization. Finally the possibility of reusing existing database schema, objects and programs is guaranteed.

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V. Loeschcke,S. K. Jain,J. Tomiukf the related problems and testing class behaviors are also briefly described. Some of the issues are due to variations in the interpretation of concepts, nonuniformity in terminology, lack of programming supports for design goals, heavy dependency of implementations on the semantics of applications, etc. Several open problems are also addressed.

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