Hi Teaching Team, I have a question regarding how to translate superclass/subclass related relationship types into SQL. Take the following relation as an example: PropertyForRent（propertyNo，street，city，postcode，type，room，rent，ownerNo） Primary Key propertyNo Foreign Key ownerNo references PrivateOwner（ownerNo） and BusinessOwner（ownerNo） the foreign key ownerNo references two tables, PrivateOwner and BusinessOwner. How should we build the SQL database from this? My initial thought was to create a joint table, but if we do that, it seems there would be little point in splitting the table in the first place. I’m wondering if there is a standard approach to such problems. Thank you for your help!