Hi, I am a freelance IT consultant and project manager. Currently I manage a bunch of high profile technically sound engineers. One of my engineers is someone who has worked with marketplace technologies team in Amazon and has wide experience in dealing with product feeds. You need to create a parent-child relationships in the Amazon catalog using the flat-file feed templates which Amazon Seller Services / Seller Central provides. To build the relationship you would need to create a non-buyable parent Product (ASIN) and then relate all the variation child products (ASIN) to them. The variation criteria could be color, size, sizecolor etc.
We will create and fill the feed template for your dataset and help you upload it in the Seller Central. We can also help you understand and master all the relationship related concepts applicable to Amazon Marketplace Listings. Looking forward to a positive response from your side so that we can take it forward. Regards, Ankita