Re: The wisdom of the object mentors (Was: Searching OO Associations with RDBMS Persistence Models)

Cimode wrote:
> Actually, I have an example in mind that may be interesting...How do
> you implement a no-overlap operator constraint in SQL knowing that some
> NULL values are within a specific. Hint: try to answer this question
> using (CHECK, UNIQUE, FOREIGN KEY) and you will see what I am refering
> to.?

Could you please be more specific? What is the table defnition, what is the sample content, and what condition do you want ot assert? Received on Fri Jun 02 2006 - 14:57:29 CDT