Linking Datasets

Let me start off by saying I know there are multiple resources out there for this problem but I am having trouble understanding them. I need a very simplified guide on how to link databases.

With the members site imbedded in Wix, I need to link key elements to a separate database.
To be specific:

The “PrivateMembersData” holds the members Name, Address, Phone, Email. I want that data to automatically transfer to another member page/dataset called “profileData”.

Or is there a way to reference that data using the owner tag which I did notice directly corresponds to the member ID.

Thanks in advance for the help!!

You can use a reference field for the user ID. When you query the profileData , you can pull all referenced data from that user ID.