Contemporary methods for determining system requirements
Supp/2006 , p840..850
Author(s):
Cristina ŢARŢAVULEA
Ştefan MARIA
Keywords:
system requirements, JAD, RAD, RUP, Prototyping
Abstract:
A very important step in the process of designing an information system is to determine the system requirements. The activity of determining the system requirements is being considered a difficult step, because the process of making an exact evaluation of the required information is very complex. In some situations, the users can be subjective when they are asked about such a theme, in other situations they do not know which is the information they need or they may not identify it correctly. To increase the results of the process of collecting and structuring the information, there can be used a series of modern methods and tools in order to determine the system requirements: JAD (Joint Application Design), CASE tools, Prototyping, RAD (Rapid Application Development) and RUP (Rational Unified Process). To improve the use of JAD, there can be used group support systems to facilitate the sharing of ideas and voicing of opinions. The methods use modern techniques to determin and delimite the system requirements, reducing to minimum their level of ambiguity. In this paper, there are presented the characteristics of these methods, the situations when it should be used a method or another, the activities particulars for each method, the advantages and the disadvantages of the methods. The use of these techniques reduces the amount of time required for analysis.
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