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Summary
In this lesson the significance of the data management based on database systems
and the role of a database system within a geoinformation system (GIS) was explained. At
the beginning, terms like database system and geoinformation system were defined and the
terms data and information positioned in context.
Following
important reasons for the use of database systems for the management of data in general
and geodata in particular were given and illustrated with example applications of
different fields of use. Included in the significant characteristics of the database
approach are concurrent use as well as structured and described data. Additionally the
advantages of the separation of data and applications and the features for high
reliablitiy and data security like the concepts of transactions and data views were
discussed.
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