UML Sequence Diagrams are interaction diagrams that detail how operations are carried out. They capture the interaction between objects in the context of a collaboration. Sequence Diagrams are time focus and they show the order of the interaction visually by …
Lewin’s Change Management Model is a comprehensive change model designed to understand why change happens and what must be done to effect change in the most seamless way. Lewin developed the change model as a way to illustrate how people …
A use case diagram is a Unified Modeling Language (UML) diagram for requirements elicitation. Use case diagrams provide a graphical overview of the goals (modeled by use cases) that users (represented by actors) want to achieve by using the system. …
In UML, relationships are connections between model elements. Use cases are also connected to each other in different kinds of relationships. The relationship between two use cases basically models the dependencies between two use cases. By reusing existing use cases …
A use case describes how a user uses a system to accomplish a particular goal. A use case diagram consists of the system, the related use cases and actors and relates these to each other to visualize: what is …
If your business has a specific domain, you can use UML profiles to create new model elements. These elements are derived from your existing model elements, but have attributes specific to your business domain. UML profiles enable you to customize …
Packages in the Unified Modeling Language are used to group elements and provide namespaces for the grouped elements. A package can contain other packages, thus providing a hierarchical organization of packages.
Almost all UML elements can …
Multiplicity in class diagram should be indicated at each end of the association. This specifies the minimum and maximum number of instances that can be linked.
For example, a car has 3 or 4 wheels, but each wheel belongs to …
There are six main types of relationships between classes: inheritance , realization / implementation , composition , aggregation , association, and dependency . The arrows for the six relationships are as follows:
Then we …
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