Can I have a foreign key referencing a column in a view in SQL Server?

Question

In SQL Server 2008 and given

TableA(A_ID, A_Data)
TableB(B_ID, B_Data)
ViewC(A_or_B_ID, A_or_B_Data)

is it possible to define TableZ(

Answer 1

Sorry, In the strict sense of the word, no you cannot set foreign keys on views. Here is why:

InnoDB is the only built-in storage engine for MySQL that features foreign keys. Any InnoDB table will be registered in information_schema.tables with engine = 'InnoDB'.

Views, while registered in information_schema.tables, has a NULL storage engine. There are no mechanisms in MySQL to have foreign keys on any table that has an undefined storage engine.

Thanks!