Techniques used for modeling system logic include:

Techniques used for modeling system logic include: 




A. flow charts.
B. decision tables.
C. data-flow diagrams.
D. dialogue charts.
E. entity relationship diagrams.



Answer B

When you believe that you have shown each business form or transaction, computer screen, and report as a single data flow, you have probably reached the:

When you believe that you have shown each business form or transaction, computer screen, and report as a single data flow, you have probably reached the: 




A. level-0 diagrams.
B. ternary level diagrams.
C. primitive data-flow diagrams.
D. secondary-level diagrams.
E. context level diagrams.



Answer C

If an input from a source appears on a level-0 diagram, it must:

If an input from a source appears on a level-0 diagram, it must: 




A. appear on the context diagram.
B. be connected to a data flow.
C. be connected to a sink.
D. be connected to a data store.
E. be connected to two entities.



Answer A

The lowest level of DFDs are:

The lowest level of DFDs are: 




A. level-0 diagrams.
B. context diagrams.
C. level-1 diagrams.
D. primitive data-flow diagrams.
E. systematic diagrams.



Answer D

On a data-flow diagram, you may:

On a data-flow diagram, you may: 



A. repeat data stores and processes.
B. repeat sources/sinks and processes.
C. only repeat processes.
D. repeat relationships.
E. repeat both data stores and sources/sinks.



Answer E

Which of the following is a true statement regarding data flows?

Which of the following is a true statement regarding data flows? 




A. A data flow to a data store means retrieve or use.
B. A data flow from a data store means update.
C. A data flow may have double-ended arrows.
D. A data flow represents data at rest.
E. A join in a data flow means that exactly the same data come from any of two or more different processes, data stores, or sources/sinks to a common location.



Answer E

Which of the following is NOT a true statement regarding data flows?

Which of the following is NOT a true statement regarding data flows? 




A. A data flow can go directly back to the same process it leaves.
B. A fork in a data flow means that exactly the same data go from a common location to two or more different processes, data stores, or sources/sinks.
C. A data flow from a data store means retrieve or use.
D. A data flow has a noun phrase label.
E. A data flow has only one direction of flow between symbols.



Answer A

Which of the following is a true statement regarding a data store?

Which of the following is a true statement regarding a data store? 




A. Data can move directly from one data store to another data store.
B. Data stores illustrate relationships among entities.
C. A data store has a noun phrase label.
D. Data can move from an outside source to a data store.
E. A data store shows data in motion.



Answer C

A black hole is a process that:

A black hole is a process that: 




A. has only inputs.
B. has only outputs.
C. has not been exploded to show enough detail.
D. has insufficient inputs to produce the associated processes.
E. generates output directly to a sink.



Answer A

A miracle process is one that:

A miracle process is one that: 




A. has only inputs.
B. has only outputs.
C. cannot be exploded further.
D. has insufficient inputs to produce the associated processes.
E. is connected directly to a source.



Answer B

By placing a data store between two processes, this:

By placing a data store between two processes, this: 




A. decouples the processes.
B. enables store and forward capabilities.
C. enhances the flow of data between the processes.
D. structures the processes.
E. disintegrates the processes.



Answer A

Which of the following is true regarding the context diagram?

Which of the following is true regarding the context diagram? 




A. The process symbol is labeled "0."
B. The context diagram contains two processes.
C. Data stores must be shown on the context diagram.
D. The internal workings of the system are shown on the context diagram.
E. The context diagram organizes the processes in a tree-like structure.



Answer A

Which of the following is a true statement regarding sources/sinks?

Which of the following is a true statement regarding sources/sinks? 



A. Data must originate outside a system from one or more sources.
B. The system must produce information to one or more sinks.
C. Sources/sinks are always outside the information system and define the boundaries of the system.
D. If any processing takes place inside the source/sink, we are not interested in it.
E. All of the above are true statements.



Answer E

Which of the following would be considered when diagramming?

Which of the following would be considered when diagramming? 




A. The interactions occurring between sources and sinks
B. How to provide sources and sinks direct access to stored data
C. How to control or redesign a source or sink
D. What a source or sink does with information or how it operates
E. None of the above



Answer E

Which of the following is NOT a process modeling deliverable?

Which of the following is NOT a process modeling deliverable? 



A. A context data-flow diagram
B. Thorough descriptions of each DFD component
C. DFDs of the current physical system
D. An entity relationship diagram
E. DFDs of the new logical system



Answer D

Graphically representing the processes that capture, manipulate, store, and distribute data between a system and its environment and among components within a system refers to:

Graphically representing the processes that capture, manipulate, store, and distribute data between a system and its environment and among components within a system refers to: 



A. data modeling.
B. structure modeling.
C. process modeling.
D. transition modeling.
E. logic modeling.



Answer C

Data-flow diagrams allow you to:

Data-flow diagrams allow you to: 



A. show the timing of data flows.
B. model how data flow through an information system.
C. demonstrate the sequencing of activities.
D. show the relationship among entities.
E. represent the internal structure and functionality of processes.



Answer B