Documenting Requirements - Types of Documentation
3 important questions on Documenting Requirements - Types of Documentation
What are the advantages and disadvantages of natural language documentation?
- Advantages: No stakeholder has to learn a new notation; language can be used for miscellaneous purposes; language can be used for all 3 requirements perspectives.
- Disadvantages: can allow requirements to be ambiguous, and requirements of different types and perspectives are in danger of being mixed up
What are the advantages of the model-based requirements documentation forms ?
- Use case diagram: allows you to gain a quick overview of the functionalities of the specified system.
- Class diagram: used to document the static structure of data, and static-structural dependencies.
- Activity diagram: sequence modelling, e.g. business processes, or sequence-oriented dependencies, or model the sequential character of use cases.
- State diagram: documents event-driven behavior of a system. documents states a system can be in and events which trigger state transitions.
What are the advantages of mixed form of requirements documentation?
- Lowers disadvantages of individual forms.
- Combines advantages of individual forms.
- Models can be amended or complemented by natural language comments.
- Natural language forms can be summarized and their dependencies can be depicted clearly by making use of models.
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