Rollback and recovery for a multicopy file in a distributed data base
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The process of rollback and recovery is a form of redundancy introduced into data base systems to enhance the integrity and consistency of the data. Rollback and recovery consists of periodical checkpointing (storing a copy of relevant data) and keeping a chronological record of transactions which modify the data base on an audit trail. When an error is detected in the data base, the data base copy made at the most recent checkpoint is loaded and all update transactions stored on the audit trail since the last checkpoint are reprocessed and applied to this copy. This thesis analyzes the process of rollback and recovery for multicopy files in a distributed data base. Models are developed which find the optimal time between checkpoints. The practical considerations concerning a control of rollback and recovery in a distributed data base environment are also presented.
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This work is available on request. You can request a copy at https://library.carleton.ca/forms/request-pdf-copy-thesis
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Copyright © 1977 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 1977
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