The CDS is a data source that is available to the Power Platform and that allows you to store data in a structure that shares a lot of similarities to a database. The data is structured in entities that use fields to hold and structure the data very much like a database table that you expect to see in something as simple as a Microsoft Access database.
The CDS enables users to share data across several different applications within Office 365 including PowerApps, Microsoft Power Automate, and Power BI. Unlike other data sources, to use the CDS, we do not need to provide specific connection information as the underlying database is automatically connected to the environment where the app exists.
The CDS allows you to build relationships between entities. Most developers within Office 365 would default to using lookup columns between SharePoint lists, whereas the CDS allows us to define and manage relationships between the different entities in the same way as we would...