Tillämpning av UML
Hur och varför
In the end of the 80´s the area of system development moved into a new era. As a consequence many new methods and development models emerged which in many cases resulted in problems when choosing system development models and methods. As a result of these problems the today standardized modeling language UML (Unified Modeling Language) was created. UML is tailored to support many different types of projects. This is possible because of UML?s capacity to be adjusted and adapted to a specific company environment.The purpose of this bachelor thesis is to investigate how and why companies use UML and what experiences and opinions those who use UML have of using UML in practice. To fulfill our purpose we have chosen to carry out a qualitative study with semistandardized interviews. The interviews were accomplished on four companies in Jönköping. The result of the research shows that the primary reason for companies to carry out modeling is because it results in good documentation which makes development, administration and operation easier. Furthermore, the study has shown that the reason that companies have chosen UML is because it is a standard which is suited for various different projects and also for the development model used in the company. The standardization is also, according to all companies, the primary strength with UML.Weaknesses in UML are considered to be the lack of process diagrams and standardized syntax in modeling tools. There was found to be an increase in the number of diagrams used the longer the companies have used UML. The diagrams applied by all companies are: use case diagram, class diagram and sequence diagram. Moreover, the use of diagrams for a specific project is dependent on the project type and size. However, none of the companies utilize the flexibility to adjust the syntax. All companies combine UML with RUP or business customized development models with characteristics from RUP. There is, however, a difference in how companies use the diagrams in combination with the development models. This probably depends on the companies? iterative way of working where the diagrams are involved in the whole system development process.