Which of the following do () describe how analysts use CASE tools? ()
A. decrease maintenance costs
B. increase productivity
C. communicate more effectively with users
D. integrate the work that they do on the system from the beginning to the end of the life cycle
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Which of the following is () an error when drawing a data flow diagram?()
A. all data flowing into a process or out of a process
B. data flow on a child diagram that has only one end connected to a process, the other end is a point in space
C. connecting data stores and external entities directly to each other
D. placing more than nine processes on a data flow diagram
A logical data flow diagram:()
A. includes types of programs, such as online or batch.
B. is a model of how the system will be implemented.
C. does not include any primitive processes.
D. is a model of how the business operates.
Which of the following is () an advantage of using a physical model?()
A. Transaction data stores are identified.
B. It is easier to create compared with the logical model.
C. The sequence of processes is identified.
D. Controls are included.
A CRUD matrix is used to show:()
A. places in the system where the data is inaccurate.
B. where records are updated, added, deleted or used.
C. which Web pages are placed on a secure server.
D. the partitioning of data flow diagrams in a client/server environment.
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