An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include () , we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and () • The first physical DFD,to be drawn is the () . The next step is to distribute data stores to different processors. Data ()are two types of distribu
A. logical DFDs and ERD
B. ideal object model and analysis class model
C. use case models and interface prototypes
D. physical DFDs and database schema
A new poll shows that people believe that computers and the Internet have made life better for Americans, but people also see some dangers in the trend toward computerization.
The poll found that the public favors some government protection from cyber-problems (网络问题), but in general people are not especially concerned about issues such as information overload or the never-ending flow of phone calls, faxes and e-mails. A separate survey of children aged 10-17 shows that they have a more positive attitude about computers than adults do, and most have made use of up-to-date technology in their schools.
The survey found that enthusiasm for computers and the Internet is found in all income groups, all regions of the country, all races, and most age groups. However, people over 60 and those towards the lower end of the income rank tend to show lower rates of computer ownership and Internet usage. The survey shows that "some kind of gap has been crossed: Computers a
A. all the American children have used the latest technology in schools
B. computers and the Internet are very popular with Americans
C. Americans tend to place more importance in the Internet usage than computers
D. the public in America do not hate the Internet problems
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