Storing flags in a DB

Question

In my application, I\'d like the user to select his working days. then store them in the database. Of course my application will process the users\' data like: Is today a wo

Answer 1

I would say that bit mask fields are a relational anti-pattern.

A field should have a single meaningful value, otherwise you end up with querying issues - parsing the field every time you need to query using it.

Such a field also requires extra documentation, as the values it stores are not self describing.