When you navigate to the lowest level in the data lineage, you should be able to see the connection information of the data source.
For example, for CSV file, you can check the information mentioned in Route on data lineage. It is visible for CSV at data source level, since this information is a part of connection, unlike table name for JDBC data source which gets populated after connecting, during the creation of base view.
Also, if you wish to see complete information for the creation of the base view used in your specific derived view, you should click on the base view, which will open the base view and then you can click on the VQL and "Show dependencies" to see complete info such as SCHEMANAME and the RELATION for base views over DB or connection details for DF files.
Hope this helps!