Cron insert/update of categories and products

Before I go asking support - is there anyone on here who understands all of the tables that would need to be involved for automatically inserting and updating products from another cart. In other words, a different cart from CS Cart would be modified and CS Cart would need to reflect the category and product changes. I’m a seasoned programmer - I just need to know the tables involved and if any gotchas are known that would be helpful too.

Thanks much,