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"UML is not dessert topping and floor wax." - Grady Booch on the versatility of UML. UML as you know, includes a set of graphic notation techniques that helps you specify, visualize, and document models of software systems, including their structure and design, in a way that meets all of these requirements. There are many popular professional diagramming tools like Visio available in the market. Depending on your need, sometimes you don’t really need commercial tools to generate UML diagrams.
In the previous two articles, you saw a brief review of the nine UML diagrams and what kind of tools can be used to model UML diagrams. Now that you have the clear , you'll start to learn about the the nine UML diagrams. In this article, you'll explore the Use case diagram .
Identifying the activities and transitions for managing course information The course administrator is responsible for managing course information in the Courseware Management System. As part of managing the course information, the course administrator carries out the following activities: Check if course exists If course is new, proceed to the "Create Course" step If course exists, check what operation is desired—whether to modify the course or remove the course If the modify course operation is selected by the course administrator, the "Modify Course" activity is performed If the remove course operation is selected by the course administrator, the "Remove Course" activity is performed
In its basic form, an activity diagram is a simple and intuitive illustration of what happens in a workflow, what activities can be done in parallel, and whether there are alternative paths through the workflow. Activity diagrams as defined in the Unified Modeling Language 1 are derived from various techniques to visually illustrate workflows; see, for example, Johansson et al. 2 . And much of the basis for the definition of the activity diagram notation is found in Martin and Odell. 3 .