The money one is a bit worrying, at least if "numerical" includes floating point types. It's almost never a good idea to use these for monetary values. If you

The money one is a bit worrying, at least if "numerical" includes floating point types. It's almost never a good idea to use these for monetary values. If you are going to have different currencies I almost always would go for integer types (I don't understand the "rarely" advice here) as the fraction may vary greatly for different currencies. It's better to derive the fractional from the currency.