[ThinkBeat]

If you go with nullable Boolean in the database schema, do you give it a type of nullable boolean in the code?

In which case null would either mean the value on the recordin the database is null, or that that for whatever reasons that parameter was not read from the database.

You will need two types of null.

All of this goes away with an enum or similar solution.

You can decompose the nullable boolean in the database when you read it , but again your task would be easier to treat it like an enum.