I want to connect an external database with salesforce. I have seen examples: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_connector_examples.htm
So I have some doubts. Can I connect to any external service? I think, with method getResponse in MyExampleDataSourceConnection, I can do a integration with the third application, and this data can be shown in Salesforce, this is possible?? If this is possible, whats is the difference between Salesforce Connect (integration in this methods) and a normal Integration?? Maybe the data is synchronized in real time?