Data flow mapping in power bi

A dataflow is a collection of tables that are created and managed in workspaces in the Power BI service. A table is a set of columns that are used to store data, much like a table within a database. You can add and edit tables in your dataflow, as well as manage data refresh schedules, directly from the workspace in which your dataflow was created.

To create a dataflow, launch the Power BI service in a browser then select a workspace (dataflows are not available in my-workspace in the Power BI service) from the nav pane on the left, as shown in the following screen. You can also create a new workspace in which to create your new dataflow.

There are multiple ways to create or build on top of a new dataflow:

Create a dataflow using define new tables
Create a dataflow using linked tables
Create a dataflow using a computed table
Create a dataflow using import/export

This may help you,

Rachel Gomez