The correct description in the following tasks related to the requirements analysis phase is ( )
A. To answer "What does the software have to do?" "
B. A software requirements statement is required
C. System analysts can use interviews, simple application specifications technology to obtain user needs
D. That's all right
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The task of the software problem definition phase is ( )
A. Determine whether the system is worth developing
B. What are the specific functions of the system?
C. Identify the system's goals, size, and basic requirements
D. How exactly the system does
The task of the requirements analysis phase is ()
A. Identify the system's goals, size, and basic requirements
B. Identify what the system must do
C. Be clear about what the system does
D. Study whether the system is worth doing
The following options ()are the basic symbols of the data flowchart
A. External entities, data processing, data flow, and business processing units
B. External entities, data processing, data streams, and data storage
C. Description of external entities, information delivery processes, data flows, and business processing capabilities
D. External entities, data processing, data streams, and data file archives
A data flowchart is a tool that describes ()an information system
A. The physical model
B. The logical model
C. Optimize the model
D. The decision model
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