A backup and recovery system for a relational database

dc.contributor.advisorHuang, Stephen S. H.
dc.contributor.committeeMemberRusinkiewicz, Marek
dc.contributor.committeeMemberScamell, Richard W.
dc.creatorWang, Jim-mei Vivian
dc.description.abstractDatabase recovery is always of essential concern in a database processing environment. A database could be damaged in one of several ways, including system crashes, physical damage, inadvertent erasing by an operator, or by an application program error. The effect and impact of such loss on the user's installation can be minimized through the use of database recovery programs. In this thesis, the REQUEST Relational Database System is implemented to protect the database by making periodic copies of the database and by recording data changes on the log/journal tape(s). This thesis discusses the design and the implementation of REQUEST'S five utility programs: Database Image Copy Utility, Database Log/Journal Utility, Log Purging Utility, Log Cumulation Utility and Database Restore Utility. In an event of failure in the REQUEST database, the latest 'good' copy is updated with changes that have been logged in the journal since the copy was made, thus restoring the REQUEST database to its condition at the point of failure.
dc.description.departmentComputer Science, Department of
dc.format.digitalOriginreformatted digital
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.subjectElectronic data processing departments--Security measures
dc.titleA backup and recovery system for a relational database
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentComputer Science, Department of
thesis.degree.disciplineComputer Science
thesis.degree.grantorUniversity of Houston
thesis.degree.nameMaster of Science


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