6.9 Using the basic model of an information system as presented in Figure 6.18, suggest the components that might be part of an information system that allows users to view box office events, available tickets and prices, eventually buy tickets.

Students should consider the levels in the information system and should identifycomponents that might be included at each level. Examples of these componentsmight be:Level 1 (Database level)Flight database; Flight status database; Airport information;Level 2: (Information retrieval level)Status management; Flight management; Search;Level 3: (User interaction level)Authentication; session management; forms processing ()Level 4 (User interface)Input checking (Javascript), browser