is there a way to limit access for some users only to certain records?
e.g. there is a customer table and there are account-managers. Could I limit account-manager #1 so that he only can access customers only acording to a flag?
Say I create a relation cu_am ( customer_id, account_manager_id ). Could I let the database control that account-manager #1 can only see customers who are assigned to him in the cu_am-relation?
For now I do this in the front-end but this is easily circumvented for anyone who has a clue and uses some other client like psql.