Visual Case Tool - UML Tutorial

Posted: Oct/25/2009 By: pankaj Points:15 Category: Others - Others Views:186 Vote Up (0) Vote Down (0)

Welcome to the Visual Case UML tutorial. The following pages are intended as an introduction to the unified modeling language and design with the UML using Visual Case. The UML is a very complex and rich language, these pages are just an introduction to some of the more commonly used aspects of the language.

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Visual Case Tool - UML Tutorial

More formally, a use case is made up of a set of scenarios. Each scenario is a sequence of steps that encompass an interaction between a user and a system. The use case brings scenarios together that accomplish a specific goal of the user.

A use case can be specified by textually describing the steps required and any alternative actions at each step. For example, the use case for searching a web for a keyword might be shown as:

1. Customer enters the keyword
2. Customer clicks the search button
3. The search is executed
4. The results are shown

Visual Case Tool - UML Tutorial

. The Class Diagram

The class diagram is core to object-oriented design. It describes the types of objects in the system and the static relationships between them.

Packages

Packages allow you to break up a large number of objects into related groupings. In many object oriented languages (such as Java), packages are used to provide scope and division to classes and interfaces. In the UML, packages serve a similar, but broader purpose.