Imagine you are scouting for a new apartment in a new town, and fill a Notion DB with the details of apartments you are interested in: Owner name, Address, etc.
But! Not everyone in this new town is nice - some of them are horrible flat owners and you wish to avoid them. You are lucky enough to have a list of bad owners which you have, conveniently, also kept in Notion.
Could you build into your apartment database some function that will turn on if you fill in a name that exists in the naughty list?
Should look something like this:
Evil name list: Bill, Bob, Karen
|Phil||7 Short st||-|
|Joe||12 Short st||-|
|Karen||27 Short st||XXX|