Arrows with names in the data flowchart indicate ()
A. Controls the order in which programs are executed
B. The call relationship between modules
C. The flow of data
D. The composition of the program
查看答案
Data dictionary is one of the important tools () in the software requirements analysis stage.
A. The data definition
B. Data maintenance
C. Data communication
Database design
At all stages of software development, the biggest impact on the success or failure of software development is ()
A. Demand analysis
B. Summary design
C. Detailed design
D. Coding.
The following statement about the data flow diagram is incorrect in ( )
All possible data flows and data flows should be depicted in the data flow graph.
B. The basic point of a data flow diagram is to describe "what to do" regardless of "how to do it".
C. A data flow diagram is a logical model of a system.
D. One of the main uses of data flow diagrams is as a tool for analysis and design.
The task of software requirements analysis is ()
A. To answer "What software must do"
B. Can be summarized as understanding, analyzing, and expressing "what the system must do"
C. Requires the preparation of requirements specifications
D. That's all right
微信支付 
支付宝支付