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Hello and welcome to a tale of analysis and design, featuring

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Spencer Rugaber, as the librarian, and Alex Orso,

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as the software engineer. [SOUND]

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>> Hi! I'm here waiting for Spencer, my librarian friend. He needs some

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help developing an information system for a library. So I asked him to write

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down the requirements for the libra... Oh, [SOUND] that must be him.

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>> Hello Alex.

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>> Hey Spencer. How's it going?

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>> Good. Did you get those requirements I emailed you?

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>> Oh, you emailed them. Now let me check.

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And, by the way, get some coffee for you here.

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>> Thank you very much.

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>> Oh yeah. They're right here. Let me see. Oh, good. Oh, yeah,

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good. We have, what we need. So the, the way I like to do

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this is. I like to start by

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looking at the requirements and identifying the nouns

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in the requirements, because those tell us

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the kind of the relevant elements in the,

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in the requirements. So if you don't mind we can start looking at those and

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you can tell me you know, whether the ones that I am identifying make sense or not.

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>> Sounds good.

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>> All right.