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المؤلفNakamura, Syouji
المؤلفZhao, Xufeng
المؤلفNakagawa, Toshio
تاريخ الإتاحة2020-09-20T08:35:36Z
تاريخ النشر2017
اسم المنشورInternational Journal of Reliability, Quality and Safety Engineering
المصدرScopus
الرقم المعياري الدولي للكتاب2185393
معرّف المصادر الموحدhttp://dx.doi.org/10.1142/S0218539317500152
معرّف المصادر الموحدhttp://hdl.handle.net/10576/16162
الملخصIt has been commonly known in a Database Management System that constant plans of incremental/differential backup schemes are set up and their full backups should be done to balance the costs of data backup and failure recovery. In this paper, we consider a database system that is running for 24/7 and has several random busy states of updates, and we suppose that incremental/differential backups are implemented after each update and full backups are triggered at constant time T and random updates N. That is, models with decision variables of T and N for full backups with random incremental/differential backups are considered. We obtain the expected costs of data backup and failure recovery and the expected cost rates for full backups. Optimum solutions to minimize the expected cost rates are discussed in analytical ways. Furthermore, full backups that are made at time T and updates N are considered as constant and random modes respectively and compared analytically. For the discussions, numerical examples in exponential cases are given.
اللغةen
الناشرWorld Scientific Publishing Co. Pte Ltd
الموضوعdata recovery
data update
database failure
incremental backup
Random backup
العنوانConstant and Random Full Backup Models with Incremental and Differential Backup Schemes
النوعArticle
رقم العدد3
رقم المجلد24
dc.accessType Abstract Only


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