Is the class diagram used for the new airfare booking system only?
The mileage system will only appear in component diagram. Is it correct?
Besides, from the requirement, I think that there should be a Java application for travel agents to access both mileage system and airfare booking system. For customers, there is a single web-based application which can connect to mileage system and also booking system. Since mileage system is a legacy system, JCA is used when interfacing with mileage system from both Java application and web-based application. Is it ok?
Regarding the response time, does it mean using load-balancing?
Please kindly give me some advice. Thanks a lot!