Faced with the software crisis, the methods to develop information systems have become strengthened and have shown increasing capabilities in providing quality products with certain levels of efficiency. However, there are aspects that have an undeniable influence on the crisis and that have not been taken into account, one of which is the balance between efficiency and effectivenesa. The objective of this paper ¡S to evaluate three methodologies based on different concepts to determine how each one supports effectiveness and efficiency in the development of the software process as well as the software system itself. Firstly, the background leading to the ponderation of the complexity in the process of developing complex and large-scale information systems is presented, followed by the comparison variables – efficiency and effectiveness- in the process of developing information systems and the software system itself. The methodologies studied are based on three different concepts: the MSA (Modern Structure Analysis) [Yourdon, 19891, IEM/ST-P (Incremental Evolutionary Methodology/Structured Techniques and Prototype) [Callaos et al, 19921 and USE CASE (Use Case Driven Approach) [Jacobson et al, 1993]. As a result of this comparison, a matrix is presentes that relates said methodologíes to the comparison variables. This research attempts to send out an alert on the need for efforts to be directed towards the effectiveness of the information systems development process, a very weak area in the methodologies studied, regardless of the concepts on which they are based. KEY WORDS Crisis in the development of software, methodology, efficiency, effectiveness, development process, information systems, product. 1
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