Recommendations fro search

Hey all.

I am looking for some sort of a database that can do a specific to general search.

So, for example, I want to do a search where:
Company=MegaCorp OR Division=SuperDivision OR Employee=Rob

I want this to return a record for 'Rob'. If that record doesn't exist, I want it to return the record for 'SuperDivision'. If that record doesn't exist, I want the query to return the record for 'MegaCorp'.

Does that make sense?

Thanks!
-Rob