I have another question about customer id:
in the database i received. a column named "owner" .
sun said it's
<for this application,
you should assume that customers and CSRs know their customer ids. The system you are writing does not interact with these numbers, rather it simply records them. If this field is all blanks, the record is available for sale.>
I didn't get the real meaning.
when i booking a record, i must update the owner ?
But if update, the record will not booked , because the field is not blanks,
even the field of <Maximum occupancy of this room> is > 0?