For this sample scenario, we will reference the following systems Let’s explore this use case with a sequence diagram. However, for the purposes of this article, let’s zoom in on step 4) buy coupon with points. Buy coupon with pointsĪs simple as it may seem, there’s actually a lot happening behind the scenes and each step can have its own sequence diagram. Referring back to our use case of mobile app customers buying coupon with points, let’s write down the typical flow for what this activity might look like from start to finish. That’s it! Of course we can add more dimensions to it, but let’s keep it simple for now. The basic building blocks for creating sequence diagrams consists of words, arrows, and system objects.
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