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Presenter: Before we jump into the Query Editor,
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I want to quickly talk about
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the different sides of Power BI.
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Now, Power BI essentially has two distinct environments,
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a front-end and a back-end.
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And the front-end of Power BI includes the data,
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the model, and report views,
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and it's where most of
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the modeling and analysis happens.
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The back-end of Power BI includes
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the Power Query Editor
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and this is where the tools live
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that allow you to extract raw data,
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transform it into a usable form,
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and then load it into the front-end.
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So digging a bit deeper,
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the back-end tools really allow you
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to connect to and extract data
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from platforms using pre-built connectors.
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You can use Profile and QA tools
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to help explore the data
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and make sure that
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it's properly cleaned prior to analysis.
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You can transform and shape tables
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to add new features,
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modify values, group records,
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or sort and transform columns.
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You can also use merge and append tools
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to join the queries together prior
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to loading it into the front-end data model.
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And then lastly here, Power Query allows you
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to perform some advanced transformations
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through writing new M code
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or by customizing the M code that's been generated.
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So just as a heads up here,
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we really won't be covering these types
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of advanced transformations within this course.
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Now the front-end of Power BI
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is all about building data models
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by creating table relationships
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between primary and foreign keys.
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And once we have that set up,
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we can add calculated measures
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and columns to help visualize the data using
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a language called Data Analysis Expressions or DAX.
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After that, we wanna design
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and build reports that really visualize
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the data in our model
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and create interactive dynamic dashboards.
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And then finally, we want to be able to publish
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and collaborate and share these Power BI reports
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with other people using Power BI Service.
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So that said, the focus
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of this section is really going to be
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on the Query Editor or the back-end of Power BI.
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And up next, we're gonna dig into
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some of the types of data connectors
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and connect to our first data source.
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