Graduate Thesis Or Dissertation
 

Implementing a semantic data model

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5138jh44k

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  • OSIRIS is an integrated information architecture which was developed at Oregon State University. SIDUR is the data model upon which the semantic level is based. The semantic level is the mediating level between user's information needs and the stored data. The advantages of providing a semantic database environment include flexibility and independence in data access and schema changes and increased representational power. The purpose of this paper is to describe the prototype implementation of SIDUR in Franz Lisp on a VAX®-11/750. This implementation maps semantic-level database operations into a descriptive formalism, called the BAGAL query language, based solely on present data which is amenable to optimization.
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