Object-based system analysis of real-time systems through application of universe-of-discourse graphs with top-level object identification
✍ Scribed by I Ögren
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 649 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0950-5849
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✦ Synopsis
Today's methods for system development have problems mainly in the area of user understanding and in education costs. A simple method for object-based analysis is shown using entity-relationship graphs to model the universe of discourse. The graphs include two couplings between objects in the real world and objects in the information system: the representational coupling and the influential coupling. Through this 'double coupling', a user can easily understand how a system is intended to work in its environment. It is further shown how the work is continued from analysis into identification of top-level objects in a design solution. As an example to illustrate the principles of object-based system analysis, a problem about flight-plan handling within an air traffic control system is described. system development, system analysis, methods, object-based analysis, graphs