Exam 4: Documenting Information Systems

Compare and contrast the description and use of physical data flow diagrams and logical data flow diagrams.

Flowcharts are commonly used for new systems implementations,business process reengineering,finance function transformations,and assessments of internal controls.

A person,place,or thing within a system that transforms data is called:

The figure below contains 14 symbols used in constructing data flow diagrams or system flowcharts.Each symbol has been assigned a capital letter (A through N)for identification in this problem.The following is a list of 14 data flow diagram or flowcharting symbols: Required: Match each symbol to its corresponding description by writing the description number below the each symbol.

A(n)______________________________ depicts a system and all of its activities as a single bubble.

Bubbles are labelled with verbs in a ____________ data flow diagram.

In a data flow diagram (DFD),two parallel lines represent the data store symbol.

When we convert to an enterprise system,reengineered processes often result from the installation and can cause changes throughout the systems flowcharts.

Which of the following data flow diagram (DFD)symbols is represented by two parallel lines?

Which data flow diagram shows what activities the system is performing without having to specify how,where,or by whom the activities are accomplished?

The following is a jumbled list of the activities suggested in this text for drafting data flow diagrams (DFDs)for an existing system: The best sequence for undertaking these activities is:

System flowcharts use only four symbols.

Examine the following context diagram and the related level 0 logical DFD.Which of the following statements is true?

On a systems flowchart,a paper file is represented by a:

There can be only one correct logical data flow diagram (DFD)for any system.

In a data flow diagram (DFD),a(n)______________________________ symbol portrays a source or a destination of data outside the system.

A(n)______________________________ data flow diagram (DFD)depicts what activities the system performs rather than how,where,or by whom they are performed.

An external entity is a person,place,or thing within the system that transforms data.

For each of the following,indicate whether it is a characteristic of a

In a data flow diagram (DFD),a bubble symbol shown below depicts an entity or a process within which incoming data flows are transformed into outgoing data flows.