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of Chinese information as much as possible. To aim at possible handling problems users may e across, sufficient online help should be provided, shortening the process of the users’ familiarization with the system [5]. Fig. 7. Scheduled activity diagram a) Login screen: When startup program, the login screen will be shown, it is used for user login. b) Tray icon: the program starts only in the Windows tray icon to display a program. c) The main interface: the major chain hotel management system user interface. d) Booking management interface, hotel management interface, payment management interface, customer management interface: Click to access all the interfaces were. 18 5 Operational Requirements User Interface Spreading between different interfaces can also be expressed in UML models, but in the UML specification and graphical representation do not have specific diagram to express, and can be represented by state diagram. References System requirements analysis using use case diagrams, sequence diagrams, interaction diagrams, activity diagrams to describe it. Through the use case diagram and activity diagram can neatly analyze business requirement, so that users and developers can quickly grasp the main features of the system for system development. Reunification of UML modeling language is a mon language for model。 1. Portal. UML Unified Modeling Practical Guide. Qinghua University Press (2021) 2. Pool, X.: UML activity diagram based on the model test case design. Modern Computer 13(32) (2021) 3. Fan, X.: Detailed UML Modeling Example. Qinghua University Press, Beijing (2021) 4. Burns, ., Koh, .: Raytheon Electronic Systems. A Comparison of Multilevel Structured Query Language (SQL) Implementations. IEEE Transactions on Software Engineering 6(1) (1996) 5. Nejad, ., Kharazmi, S., Bayati, S.: Improving Admission Control Policies in Database Management Systems, Using Data Mining Techniques. In: International Conference on Computer Science and Software Engineering, vol. 13(66) (2021) 6. HorseWhite. UML[EB/OL] (November 21, 2021), 10 原文: UML Approach on ChainHotel Reservation MIS Demanding Analyzing Abstract This paper introduces the UML approach implementation in demanding analysis phase when developing “Hotel Reservation Management System”. CASE of UML and Visio2021 are used as tools for analyzing and realizing. The original numerous demands from users are sorted and elaborated effectively by adopting the graphic approaches including use case view, interaction view, sequence view, state view. Therefore, the results provide effective foundation for subsequent system developing and implementing. Keywords: Component, formatting, UML, ChainHotel Management System, demanding analysis, Use Case, view. 1 Introduction Traditional demanding analysis places emphasis on systematic and functional elaborated analysis. It is the process that specializes in individual module makes systems analysts easy to confuse by the plicated system functions, and lack in the recognition of the general framework, the logical structure of the system and the demanding macro view? All of theses lead to the loss of a clear structure of the designed system and degrading flexibility and