21. When defining requirements, the software requirement engineer should temporarily ignore events that are important to the system but do not directly concern users or transactions. True / False? 22. In an activity diagram, a swimlane can be used to represent a loop. True / False? 23. The system sequence diagram has the more descriptive representation of the input and output messages compared to the activity diagram. True / False? 24. It is often useful in identifying events to trace the sequence of events that might occur for a specific external agent. True / False? 25. The problem domain contains things users deal with when they do their work products, orders, invoices, and customers that need to be part of the system. True / False?

21. When defining requirements, the software requirement engineer should temporarily ignore events that are important to the system but do not directly concern users or transactions. True / False? 22. In an activity diagram, a swimlane can be used to represent a loop. True / False? 23. The system sequence diagram has the more descriptive representation of the input and output messages compared to the activity diagram. True / False? 24. It is often useful in identifying events to trace the sequence of events that might occur for a specific external agent. True / False? 25. The problem domain contains things users deal with when they do their work products, orders, invoices, and customers that need to be part of the system. True / False?

Database Systems: Design, Implementation, & Management

12th Edition

ISBN:9781305627482

Author:Carlos Coronel, Steven Morris

Publisher:Carlos Coronel, Steven Morris

Chapter9: Database Design

Section: Chapter Questions

Problem 6P

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When the subsystems are allocated to physical nodes, this representing the: a. Dynamic view b. Deployment view c. Static view d. Structural view
Which one is the right answer? 1. Generating alternative initial designs would most likely be done during which phase?a. Design b. Intelligence c. Implementation d. Choice 2. The difference between front and back office systems is a. Front office systems are external systems, back office systems are internal b. Front office systems are web based, back office systems are built on database systems c. Front office systems process information at the beginning of a customer’s transaction, back office systems process information at the end of a customer’s d. Front office systems focus on getting the sales, back office systems focus on follow up
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(1) Draw a sequence diagram for the “Apply for Leave” use case: Employers need to login into thesystem using correct username and password, input the start and end date of the asking for leave,and then submit the request to the leader of the department. The leader approve the request or not. Ifthe leader approve the request, the request will be submitted to the HR to process. HR will decidewhether to approve the request according to the regulation of the company, and then send the finaldecision to employers and Accounting staffs. (2) Build an activity diagram to describe the “Apply for Leave” in question (1).
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