Design and Analysis of a Complete Hierarchical Interface for the Multi-Backend Database System

摘要

Typically, the design and implementation of a conventional database system begins with the choice of a data model, the specification of a model-based data language, and the design and implementation of a database system which controls and executes the transactions written in the data language. For example, we have the hierarchical model, the DL/I language and the Information Management System. By using an unconventional approach to the design and implementation of a basic database system, we can design a system to support multiple data models and several model-based languages as if they system is a heterogeneous collection of database systems. This thesis presents a methodology for supporting hierarchical database management on an attribute-based data-base system. Specifically, we construct an interface which translates Data Language/One (DL/I) calls into attribute-based language requests. The author describes the data structures, the control structures, and the functions required to implement this interface. (Author)