Use Case Diagrams

Use Case Diagrams in Modeldraw allow you to visually represent the interactions between users (actors) and a system. With Modeldraw's Use Case Diagram tool, you can:

  • Model the functional requirements of a system from an external perspective

  • Identify the main actors (users, systems, or external entities) that interact with the system

  • Define the primary use cases or features that the system provides

  • Illustrate the relationships between actors and use cases

  • Represent system boundaries to clarify the scope of your system

  • Communicate high-level functionality to stakeholders, including non-technical team members

  • Support requirements gathering and system design processes

Use Case Diagrams are particularly valuable for project managers, business analysts, and developers to understand and communicate the core functionality of a system without delving into technical details.

Key Components

A use case diagram in Modeldraw consists of several key components:

  • Actors

  • Use Cases

  • Associations

  • System Boundaries

Actors

Represents a user, system, or external entity that interacts with the system. Drawn as stick figures.

Use Cases

Depicts a specific functionality or feature provided by the system. Drawn as ovals.

Associations

Connects actors to the use cases they interact with. Drawn as a solid line.

System Boundaries

Defines the scope of the system being modeled. Drawn as a rectangle encompassing the use cases.

Advanced Features

Modeldraw offers several advanced features for use case diagrams:

  • Attachments

  • Generalization

  • Include

  • Extend

  • Stereotypes

Attachments

Users can upload attachments to Use Case elements. Useful for adding detailed specifications, user stories, or related documents.

Generalization

Represents a parent-child relationship between actors. Drawn as a solid line with a hollow arrowhead pointing to the parent.

Include

Indicates that one use case includes the functionality of another use case. Drawn as a dashed arrow with the label «include».

Extend

Shows that one use case may be extended by another under certain conditions. Drawn as a dashed arrow with the label «extend».

Stereotypes

Customize the appearance and meaning of use case elements. Stereotypes can be applied to actors, use cases, or relationships in Modeldraw, allowing for more nuanced and domain-specific modeling.

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