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<v ->Hey, what's up, Gurus?</v>

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Welcome to section 7, the "Data Serving Layer".

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For reference, you are right here.

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So we're a little past the halfway point,

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heading into that last third of the course.

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Congratulations, keep it up.

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Keep moving.

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In this section,

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we are going to talk about first, a foundation.

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Talk a little bit about schema and dimensions

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and what that is.

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We're going to talk about designing

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and building external tables.

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And we're going to talk about metastores and metadata.

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Now, for this section,

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some of this should be a refresher,

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especially when we talk about some basic concepts,

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such as schema and dimensions.

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If it's not and you're wildly confused,

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you might want to jump back in

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and do a little bit more research

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into some of those basic topics.

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However, you should be good to move forward.

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You certainly don't need to be an expert

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and we will cover the basics

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of what you need to know.

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Second, don't forget the services.

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So as we move through the course,

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keep in mind that you want to be thinking

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about the Azure services

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that use the key concepts that we are talking about.

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And then we'll be using some very light code.

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This is really more a focus on concepts.

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So I'm not going to dive a whole lot into SQL

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and other things as it's likely not going

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to be on the DP-203.

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So we'll try and keep focus on the DP-203

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and keep you moving forward.

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With that, hey, let's jump in to section 7.