Infrastructure Engineering - Theses

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Non-current data and land information systems

Hunter, Gary John ( 1986)

Within the larger Land Information Systems (LIS) being developed in this is likely that several thousand records per day will be and thus become non-current. In order to minimise system country, it superceded, operating costs, the logical solution is to delete these data when they cease to be current, however this ignores any present or future value which they might have to other users. The purpose of this thesis is to examine the problems of non-current data produced in a LIS, such as: identifying the users; the law affecting records disposal; deciding which data are worthy of preservation; storage methods; costs and benefits; and the present policies being adopted by organisations establishing LIS, with respect to this subject. In addition, the practical aspects of archiving superceded graphical data were investigated during development of an historical Digital Cadastral Data Base - a system capable of displaying the parcellation of a region at any point in time since first settled.