MSMQ v Database Table

Question

An existing process changes the status field of a booking record in a table, in response to user input.

I have another process to write, that will run asynchronously

Answer 1

I would probably go with MSMQ, or ActiveMQ myself. I would suggest (presuming that you are considering MSMQ you are using windows, with MS technology) looking into WCF, or if you are using MS-SQL 2005+ having a trigger that calls into .net code to run your processing.