When you configure a mapping, you describe the flow of data from the source to the target.
A mapping defines reusable data flow logic that you can use in mapping tasks.
When you create a mapping, you define the Source transformation and Target transformation to represent a Microsoft Fabric OneLake object. Use the Mapping Designer in Data Integration to add the Source or Target transformations in the mapping canvas and configure the Microsoft Fabric OneLake source and target properties.
In advanced mode, the Mapping Designer updates the mapping canvas to include transformations and functions that enable advanced functionality.