In my Intro to Software engineering module at university, they put heavy focus on BDD’s, IBD’s and sequence diagrams, however I am very confused about the port names and how they work. I’ll use the example they give [Picture attatched] to explain. For example under the CashMachienSys block, it says BCS : O Bank Cmds , what does this mean? That it connects the services from ? to the services from ?. I think I’m mostly confused about the names of them all! Any help would be appreciated
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