What is the best database schema to support values that are only appropriate to specific rows?

Question

I have a db table called Calendar with fields

1. Id (PK)
2. Name
3. Description
4. CalendarTypeId (FK into CalendarType

Answer 1

You can use the Single Table Inheritance Pattern, which is close to your suggestion,

http://martinfowler.com/eaaCatalog/singleTableInheritance.html

or

http://martinfowler.com/eaaCatalog/classTableInheritance.html

if you want to specialize some tables to match the types (Calendar and CalendarType2) you are trying to represent in your database