Tableau can connect to a variety of data sources, including relational databases, cubes, cloud-based data, flat files, and more.
For example, to connect to a relational database like Microsoft SQL Server, you would open Tableau, select the “Connect” option, and then select the data source type (in this case, “Microsoft SQL Server”). You would then enter the server name, database name, and authentication credentials, and click “Connect”. Once connected, you can begin exploring the data and creating visualizations.