Pimcore for multiple retail catalogs

I’m looking to utilize Pimcore for multiple retail catalogs (i.e. multiple product catalogs to multiple eCommerce sites, NOT a single catalog to multiple eCommerce sites). Is there a way to do that without customizing the database configuration (and UI to create and select multiple retail merchants) AND without implementing Pimcore one time PER product catalog?

Any help is greatly appreciated!

That is supported out-of-the-box really. You just have to add a many-to-many relation to select the allowed retail merchants for the product. So, one product can have multiple merchants, or one or none… As long as the product definition is the same for every merchant, it is quite easy to handle