Application service provider for the hotel industry featuring database management software used for making multi-property reservations, database management software for managing hotel reservations, check-in, check-out, housekeeping, night audio and folio management, software for providing an interface between a hotel and a central reservation system, database software for managing guest ledger charges for rooms and in-room services such as telephones, dry cleaning, in-room movies, computer e-commerce software to allow users to perform electronic hotel reservations via a global computer network, database management software used in sales and catering for managing banquets and other events, point-of-sale transaction software for in-property restaurants and bars, fitness centers, and shops, and back-office operating software for preparing profit and loss statements, balance sheets, inventory control records, accounts payable and receivable records and other accounting functions