Date of Award

1994

Document Type

Thesis

Degree Name

Master of Science in Computer and Information Science - (M.S.)

Department

Computer and Information Science

First Advisor

Yehoshua Perl

Second Advisor

James Geller

Third Advisor

Jason T. L. Wang

Abstract

In this thesis we present a system to translate the semantic elements in the graphical schema language of OODINI from API of OODAL to the Type definition of ONTOS DB. To translate semantic constraints of the graphical language, we patch more information to existent class data structure in API of OODAL. After a brief review of OODINI, ONTOS DB and the existent translator without the ability to translate semantic constraints, we describe in detail the methods to translate the essential relationship. dependent relationship, multi-valued essential relationship and multi-valued dependent relationship. We employ an Inverse Reference to a "Set of" Type to achieve the goal. Setof and Tupleof relationship are special cases of the above relationships. For validating the result of the translation, we give examples of translation of a schema containing each of the relationships discussed.

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