Application of Unified Modelling Language

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Application of Unified Modelling Language
Rasan Samarasinghe (Software Engineer)

Introduction to Modelling and UML
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Why modelling is important?
• Ensure building the right system
• Understand the effective way to do that
• Bring out the meaning / purpose
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Which aspects of a system should be
modelled?
• Business aspect
• Structure of the system
• Behavior of the system
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Unified Modeling Language
A standard way to visualize software systems
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Class diagram
• A static structure of an object oriented model.
• Shows classes and their internal structures and their
relationships.
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Benefits of Class diagram
• Describing the static view of the system.
• Describing the functionalities performed by the system.
• Construction of software applications using object oriented
languages.
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Component diagram
• Model physical aspects of a system.
• These physical aspects are the elements like executables,
libraries, files, documents etc which resides in a node.
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Notations of component diagram
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Benefits of component diagram
• Model executables of an application.
• Model system's source code.
• Visualize the relationships of the components.
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Use case diagram
• Graphical representation of a user's interaction with the system.
• Capturing the dynamic aspect of a system.
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Notations of use case diagram
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Benefits of use case diagram
• Gather requirements of a system.
• Get an outside view of a system.
• Model the context of a system.
• Understand the project scope.
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Sequence diagram
• Describe types of interactions among the different elements
in the model.
• Sequence diagram emphasizes on time sequence of
messages.
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Notations of sequence diagram
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Collaboration diagram
• Emphasizes on the structural organization of the objects that
send and receive messages.
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Notations of collaboration diagram
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Benefits of interaction diagrams
• Capture dynamic behavior of a system.
• Describe the message flow in the system.
• Describe structural organization of the objects.
• Describe interaction among objects.
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Activity diagram
• Flow chart to represent the flow of activities.
• An activity can be described as an operation of the system.
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Notations of activity diagram
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Benefits of activity diagram
• Modeling business requirements.
• High level understanding of the system's functionalities.
• Draw the activity flow of a system.
• Describe the parallel, branched and concurrent flow of the
system.
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Recycling machine
1. Class diagram
2. Component diagram
3. Sequence diagram
4. Collaboration diagram
5. Use case diagram
6. Activity diagram
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StarUML
1. Downloading StarUML
2. Installing StarUML
3. User interface
4. Starting a new project
5. Design to code conversion
6. Code to design conversion
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Thank You!www.99xtechnology.com
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Application of Unified Modelling Language

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