Introduction to System Modelling
What is a system model?
The four pillars of system modelling
Model centric vs document centric
What is SysML?
Relationship between SysML and UML
The four pillars of SysML
Common and Crosscutting Constructs
Profiles, stereotypes and tags
Diagram frames
Comments
Allocations
Package Diagrams
What is a package?
Structuring the model with packages
Package containment
Package dependencies
Representing the model structure
Views and viewpoints
Requirement Diagrams
What is a requirement?
Modelling atomic requirements
Requirement traceability
Use Case Diagrams
The system as a black box
Identifying the system boundary with actors
Use cases as system services
Behind the use case diagram
Use case structure · Nominal and alternative scenarios
Handling common behaviour
Extended and specialised behaviour
Activity Diagrams
Modelling flow-based logic
Actions vs activities
Understanding token flow
Control flow vs object flow
Modelling decisions · Modelling concurrency
Swimlanes and responsibility
Block Definition Diagrams
What is a block?
Block features
Modelling types
Modelling system hierarchy
Generalising system elements
Internal Block Diagrams
Parts revisited
Ports with Flow Properties
Standard ports and interfaces
Proxy ports and interface blocks
Full ports
Parametric Diagrams
What is a constraint block?
Constraining system properties
Sequence Diagrams
Interaction-based behaviour
Simple sequences
Synchronous vs asynchronous
Fragment nodes
Interaction use nodes
State Machine Diagrams
States and their syntax
Transitions between states
Pseudo state notation (initial, decision, history, end)
Decomposing states
Modelling concurrent states
System Modelling Resources and Further Reading
Suggested web resources
Recommended literature