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Use Case Diagram – A Notation Guide

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. …

The Four Types of Relationship in Use Case Diagram

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 …

What is a Stereotype in UML?

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 …

What is a Package? What is a Package Diagram in UML?

What is A Package?

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 …

What is Multiplicity

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 …