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A methodology for database management of time-variant encodings and/or missing information

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Title: A methodology for database management of time-variant encodings and/or missing information
Author: Threlfall, William John
Degree Master of Science - MSc
Program Computer Science
Copyright Date: 1988
Subject Keywords Electronic data processing -- Data preparation; Database management
Abstract: The problem presented is how to handle encoded data for which the encodings or decodings change with respect to time, and which contains codes indicating that certain data is unknown, invalid, or not applicable with respect to certain entities during certain time periods. It is desirable to build a database management system that is capable of knowing about and being able to handle the changes in encodings and the missing information codes by embedding such knowledge in the data definition structure, in order to remove the necessity of having applications programmers and users constantly worrying about how the data is encoded. The experimental database management language DEFINE is utilized to achieve the desired result, and a database structure is created for a real-life example of data which contains many examples of time-variant encodings and missing information.
URI: http://hdl.handle.net/2429/28349
Series/Report no. UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/]
Scholarly Level: Graduate

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