What is pivot and Unpivot - Power BI | How to pivot columns in Power BI | Tutorials for beginners
In Power Query, you can transform columns into attribute-value pairs, where columns become rows.
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You might want to unpivot data, sometimes called flattening the data, to put it in a matrix format so that all similar values are in one column. This is necessary, for example, to create a chart or a report.
When you unpivot, you unpack the attribute-value pairs that represent an intersection point of the new columns and re-orient them into flattened columns
Values are unpivoted into a new column
Attributes are unpivoted into a new column and duplicates are correspondingly mapped to the new Values column.
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Power BI Desktop is a free application you install on the local computer that lets you connect to, transform, and visualize your data. This data model lets you build visuals, and collections of visuals you can share as reports, with other people inside your organization.
Data Analysis Expressions (DAX) is a programming language used throughout Microsoft Power BI to create calculated columns, measures, and custom tables. It is a collection of functions, operators, and constants that can be used in a formula, or expression, to calculate and return one or more values.
Data Modeling
is one of the features of Power BI that is used to connect multiple data sources in the BI tool using a relationship.
A relationship defines how data sources are connected and can create interactive data visualizations on multiple data sources. With this feature, you can build your own custom calculations on the existing tables and these columns can be directly presented into Power BI visualizations.
This allows businesses to define new metrics and perform custom calculations for those metrics.
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