Accession Number : ADA115981

Title :   Query Processing in Distributed Heterogeneous Databases,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION SYSTEMS

Personal Author(s) : Huang,Kuan-Tsae ; Davenport,Wilbur B , Jr

PDF Url : ADA115981

Report Date : Dec 1981

Pagination or Media Count : 18

Abstract : In order to bring distributed heterogeneous DBMSs which are implemented with relational, CODASYL or hierachical models together to share the information resources and build new kinds of applications, we propose to use relational model as global conceptual model and ALPHA as global nonprocedual high-level query language. We described the distributed query processing scheme in this environment. A scheme translation and query translation for CODASYL system case are discussed. Relational and Hierachical systems can be treated similarily.

Descriptors :   *Distributed data processing, *High level languages, *Information exchange, Integrated systems, Information retrieval, Hierarchies, Access, Heterogeneity, Data bases, Global, Algorithms, Machine translation

Subject Categories : Information Science
      Computer Programming and Software
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE