If you have the customer-ID in the data it basically represents the "owner" of the data. Typically the data of one owner does not refer to the data of other own

If you have the customer-ID in the data it basically represents the "owner" of the data. Typically the data of one owner does not refer to the data of other owners. Also the ownership of given data probably never changes so updating it is not a problem. I wonder if this could or should be a built-in feature in databases. It is "meta-data" meaning data about data, who owns it.