Activity › Forums › Salesforce® Discussions › External Data Sources in Salesforce? Salesforce® Discussions External Data Sources in Salesforce? Posted by Anuj on May 7, 2020 at 2:11 PM What are External Data Sources and their purpose ? Marziya replied 6 years ago 3 Members · 2 Replies 2 Replies Shweta Member May 8, 2020 at 1:20 PM An external data source is a connection to an external database. External data sources usually contain data that does not change very much or data that is too large to bring into the Active Data Cache. [adinserter block='9'] Marziya Member May 8, 2020 at 1:21 PM External data sources usually contain data that does not change very much or data that is too large to bring into the Active Data Cache. Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me