Free Open Source UML Tools. "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. This article contains some Good Open Source UML tools that might do the job for you for free. StarUML - StarUML is an open source project to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. ArgoUML - ArgoUML is the leading open source UML modeling tool and includes support for all standard UML 1.4 diagrams. Violet UML Editor - Draws nice-looking diagrams. UML Modeling Tools for IDE’s Some Online UML Diagram Generators. Creating Use Case 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. We'll present the basics of use case diagrams and show you how to draw a use case diagram. Additionally, you will see what a use case specification is. Finally, you'll see how to use case diagrams for the case study application—the Courseware Management System—used in the previous articles. Basics of Use Case Diagrams Before starting off today's article, iti is worth revisiting the definition of use a case diagram, as described in the first article. The Use case diagram is used to identify the primary elements and processes that form the system.
The above statement pretty much sums up what a use case diagram is primarily made up of—actors and use cases. A use case diagram captures the functional aspects of a system. Activity Diagram in UML. 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 existsIf course is new, proceed to the "Create Course" stepIf course exists, check what operation is desired—whether to modify the course or remove the courseIf the modify course operation is selected by the course administrator, the "Modify Course" activity is performedIf the remove course operation is selected by the course administrator, the "Remove Course" activity is performed In the first step in this Activity diagram, the system determines whether the course that is to be managed is a new course or an existing course. For managing a new course, a separate activity, "Create Course," is performed. UML Activity diagram Summary About the Authors Mandar S. Page 2 of 2. Activity Diagrams: What They Are and How to Use Them.
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 Language1 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. In the Rational Unified Process4, we talk about how you can use activity diagrams to visualize the workflow of a business use case. A complete workflow description will have a basic flow, and one or several alternative flows. This workflow has a structure that we can define textually, using informal if, if-then-else, or do-until statements of various kinds. The reader of this article is assumed to be familiar with the basics of the Unified Modeling Language (UML).
Basic Activity Diagram Notation Back to top 1. Agile Modeling (AM) Home Page: Effective Practices for Modeling and Documentation.