For example, I have subscribed Realtime data from any of the source (globaldatafeeds, market-data-provider, etc) and these vendors also provide Backfill data
1. For example I want to trade today, so I am getting Realtime data from my vendor. But I want the backfill data from my computer (i,e I have downloaded the previous day's IEOD data from any source (yahoo data OR google data), I don't want to use backfill data provided by my Vendor.
Is it possible?
If yes, what is the procedure (please see the attachment)
Thanks,
Jayant