Can Sync Services add a column on the central table?

Is it possible to have Sync Services 开发者_运维问答for ADO.NET read data from a table on multiple devices and insert it into a central SQL Server, having an additional column in the central table with the origin of the row data?

Let's say I have equipped door-to-door sales people with a device where they register sales. The local table would contain rows with sales information, and the central database would contain the same data + a column with the ID of the sales person.

Is that possible, or would I need the sales person's ID in the local database too?

Sync Framework identifies each client with a GUID (see: How To:Use Session Variables) and you can use that to map a particular client to a particular salesperson (see:Identifying Which Client Made a Data Change on either How to: Use Custom Change Tracking System or How to: Use SQL Server Change Tracking.

Or try the approach here for intercepting the change dataset and inserting/substituting the salesperson value: Part 1 – Upload Synchronization where the Client and Server Primary Keys are different