中国大学mooc软件系统分析software systems analysis作业答案查询-k8凯发

k8凯发-凯发官网入口超星尔雅答案 正文

期末考试

软件系统分析

1、1.what is the difference between systems analysis and systems design?

2、2.what is an activity diagram? what does it show?

3、list and briefly describe the five activities of systems analysis.

4、list and briefly describe the six information gathering techniques.

5、describe the user goal technique for identifying use cases.

6、what is the purpose of uml use case diagrams?

7、what are the main steps of the brainstorming technique?

8、1. develop an activity diagram based on the following narrative. note any ambiguities or questions that you have as you develop the model. if you need to make assumptions, also note them. the purchasing department handles purchase requests from other departments in the company. people in the company who initiate the original purchase request are the “customers” of the purchasing department. a case worker within the purchasing department receives the request and monitors it until it is ordered and received. case workers process requests for the purchase of products under $1,500, write a purchase order, and then send it to the approved vendor. purchase requests over $1,500 must first be sent out for bid from the vendor that supplies the product. when the bids return, the case worker selects one bid and then writes a purchase order and sends it to the vendor.

9、2.(1)to what events must the ticket-processing system respond? list each event, the type of event, the resulting use case, and the actor(s). think carefully about who the actors are. does the officer directly enter the ticket into the system? or does a state patrol clerk do it when the paper ticket is received from the officer? the existing system uses paper forms, so for now assume the state patrol clerk enters all of the information. a new system would use the same use cases, but opportunities for efficiency and accuracy would lead to changes in who the actors are. (2)write a brief use case description for each use case. (3)draw a use case diagram for the ticket-processing system assuming the actors are based on your answers in question 1 (the existing system as described).

10、.consider a system that needs to store information about computers in a computer lab at a university, such as the features and location of each computer. what are the domain classes that might be included in a model? what are some of the associations among these classes? what are some of the attributes of each class? draw a domain model class diagram for this system.

11、a customer’s interaction with the system involves logging in, making withdrawal requests, deposit requests, and balance inquiry requests. if the customer logs in, there is a possibility (although rare) that the system will confiscate the card (for example, if the login is incorrect or if the bank determines that the customer’s balance is significantly under zero). card confiscation involves triggering an alert, which will be received by the branch manager of the bank. if the customer does a balance inquiry, this of course causes the system to check the balance. checking the balance is also done when the customer requests a withdrawal, since the system must verify that enough money is in his account. in principle, checking the balance is a function that may be performed to support many use cases throughout the system..

12、drawing the state diagram of the mobile phone