Rio Grande message switching/transportation system
ACM '68 Proceedings of the 1968 23rd ACM national conference
Data base system objectives as design constraints
ACM SIGMIS Database
Data base system objectives as design constraints
ACM '74 Proceedings of the 1974 annual ACM conference - Volume 2
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There has been much publicity lately about the difficulties associated with data processing systems.Customers complain that it is almost impossible for them to correct what they think are mistakes in bills sent to them by a data processing installation. Another aspect of data processing installations, which is just as important, is how to maintain files in an environment where errors can be generated by hardware or software failures. This brings up the subject of check point/restart or rerun point/recovery. Different people in the industry use different terms, however the meaning is: how to establish enough information at various times so that if a mistake is detected after that time, files can be reconstructed by returning to that time. Information on how to apply recovery procedures can usually be found in the manuals supplied by the manufacturers of software. However these are generally not available in technical libraries. The information available in the public literature is very sparse. Reference 1 gives some indication of how to recover when using tape files. Reference 3 gives some indication of how to recover when using direct access files. References 2 and 4, in describing their data processing systems, barely mention the fact that included in their system are recovery procedures.