Hi Sravani ,

Extractor: When you are connecting to a cloud source system , and where there is no standard connector available to those Source systems , you may use / develop an extractor , which will be based on REST API response.

Uplink: When you are connecting to an Onprem source system and the DB ports are not available for direct connection , in that case we need to create an uplink connector through an Extractor server positioned at client end.

Hope this helps.

Please mark my response as best response if this is helpful to you.

Regards

Ayan

Thank you