[Reference: Salesforce Data Source Management Documentation,  Identifying Dependencies:, Segment: Segments using data from the source must be deleted or reassigned., Data Stream: The data stream must be disconnected, as it directly relies on the data source., Reference: Salesforce Segment and Data Stream Management Guide,  Steps to Remove Dependencies:, Remove Segments:, Navigate to the Segmentation interface in Salesforce Data Cloud., Identify and delete segments relying on the data source., Disconnect Data Stream:, Go to the Data Stream settings., Locate and disconnect the data stream associated with the source., Reference: Salesforce Segment Deletion and Data Stream Disconnection Tutorial,  Practical Application:, Example: When preparing to disconnect a legacy CRM system, ensure all segments and data streams using its data are properly removed or migrated., Reference: Salesforce Data Source Disconnection Best Practices, , ]