业务管理：包括客房预订、入住登记、续住、换房、转账、其他服务提供、留言板、意见簿、走客结账、欠费结算。 ¯ 查询统计：包括历史单据、预订表、在住客人表、换房查询、转账查询、日经营状况、月收入状况、客房利用率、实时房态。-system design focus of this chapter describe the development of small PowerBuilder 9.0 Rooms Management System process, through the study of this chapter, readers should be familiar with PowerBuilder 9.0 TreeView control and the right mouse button menu of use, master GroupBox, SingleLineEdit, CommandButton, RadioButton, PictureButton controls such as the similarities and differences to further understanding of data objects window displays various occasions the application. System to complete the task Macr system maintenance include : corporate information, the operator management, change passwords, management succession, dictionary management. Macr basic information : Rooms management system for the basic information management (including new, modify or delete), which is the basic informat -err