A file interface and data dictionary for the ECRDBS high level database system

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dc.contributor.advisorElmasri, Ramez A.
dc.contributor.committeeMemberHuang, Stephen S. H.
dc.contributor.committeeMemberDeming, Stanley N.
dc.creatorWu, Yu-Tung
dc.date.accessioned2024-04-22T20:17:36Z
dc.date.available2024-04-22T20:17:36Z
dc.date.issued1987
dc.description.abstractThe Entity-Category-Relationship (ECR) data model captures important descriptive semantics of a database, such as generalization hierarchies and attribute inheritance. Since no complete ECR DBMS has been implemented before, an ECR DBMS, called ECRDBS, is implemented to demonstrate the usefulness of the above data modeling concepts. This thesis describes the design and implementation of two components of ECRDBS; the file interface and the data dictionary system. In the first part of the thesis, the indexed file organization on the VAX/VMS system is used to implement a file interface which provides basic, record at a time, file commands for storage, retrieval and updating of information. In the second part of the thesis, a data dictionary system based on the ECR model is implemented. It is responsible for parsing the data definition statements for a particular database and creation of data dictionary files. Function procedures are provided for the user and other components of the ECRDBS system to access the information stored in the data dictionary files.
dc.description.departmentChemistry, Department of
dc.format.digitalOriginreformatted digital
dc.format.mimetypeapplication/pdf
dc.identifier.other17936824
dc.identifier.urihttps://hdl.handle.net/10657/17028
dc.language.isoen
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.subjectDatabase management
dc.subjectFile organization (Computer science)
dc.titleA file interface and data dictionary for the ECRDBS high level database system
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentChemistry, Department of
thesis.degree.disciplineChemistry
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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