1. Adobe Experience League - Campaign Classic v7 Documentation
"Data extraction (file)": "The Data extraction (file) activity allows you to extract data from the database into a file. The extracted data is in raw format." This source directly confirms the purpose of the Data extraction activity.
2. Adobe Experience League - Campaign Classic v7 Documentation
"Data download (file)": "The Data download (file) activity lets you download a file from a URL or an FTP." This confirms its role as an import mechanism.
3. Adobe Experience League - Campaign Classic v7 Documentation
"List update": "The List update activity lets you update an existing list by adding or deleting recipients." This clarifies its function is for list management
not data export.
4. Adobe Experience League - Campaign Classic v7 Documentation
"Update data": "The Update data activity is a non-specific activity that lets you carry out mass updates on the data in the database." This confirms its purpose is to modify internal database records.