Excerpt from A Framework and Comparative Study of Distributed Hetereogeneous Database Management Systems

The prime objective of the Distributed Heterogeneous Database Management System approach is to support database integration across organizational, application, and geographical boundaries. This is achieved by efforts that aim at providing a unified global schema and common query facilities to users, without changing existing Database Management Systems or their application programs.

Design methodologies for such systems differ from each other in a number of ways. The additional complexity of translating between multiple systems and data models makes Distributed Heterogeneous Database Management Systems more challenging than conventional database systems.

This paper identifies critical aspects of Distributed Heterogeneous Database Management Systems. It aims at providing a basis for'the study of these systems, comparative analysis between such systems, and directions for further extensions.

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