Learn about state diagrams and sequence diagrams, and when to use these analysis models to do great requirements analysis.
- What is the status of my order?…Status or the state of something is often a key part…of the logic within many systems and processes.…If status and timing are critical components of a solution,…then state and sequence diagrams…will boost the value of your requirements.…Let's start with state diagrams.…State diagrams show the different states…something can take on.…For example, your order online is in the cart,…purchased, processing, shipped, or received.…
A state diagram shows all these states…and what causes the state to change.…Without understanding the states and how they change,…your user experience will be compromised.…Let's look at an example.…This state diagram shows the various order statuses…and what moves the order between the various states.…This is critical in helping developers make sure…that these events, data, and states…happen in concert with the user actions and data flow.…
You can also create a state table to show the same analysis.…It's a different visual to show the same thing,…and it would look like this.…
Author
Angela Wick
Released
8/20/2017- Define elicitation and analysis.
- Identify why elicitation and analysis are important.
- Recognize the key mindsets to make elicitation and analysis successful.
- Explore the role of brainstorming in elicitation.
- Examine the fundamentals for utilizing observation in elicitation.
- Discover the usefulness of well-run requirement workshops.
- Identify the elements of a well-done context diagram.
- Identify the elements of a data flow diagram.
Skill Level Beginner
Duration
Views
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Introduction
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Welcome1m 48s
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What you need to know1m 8s
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1. Elicitation and Analysis Overview
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Why is it important?2m 20s
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2. Elicitation Techniques
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Elicitation overview3m 30s
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Interviews3m 39s
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Brainstorming2m 48s
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Observation3m 15s
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Experiments2m 54s
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Workshops4m 5s
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3. Analysis Techniques
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Analysis overview3m 42s
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Process models4m 43s
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Context diagrams4m 56s
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Decision tables5m 6s
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Data flow diagrams3m 57s
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State and sequence diagrams2m 41s
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4. Tailoring to the Project or Product Type
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Conclusion
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Next steps1m 2s
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Video: State and sequence diagrams