Chapter 4: Enterprise Modeling

One difference between system flowcharts and data flow diagrams is that system flowcharts show conditional logic whereas DFDs don't.

• True

• False

The highest level of data flow diagrams is the Level One diagram.

• True

• False

In the data flow diagram (DFD), arrows represent which way the data goes (in or out); these are called...

• External entitles

• Processes

• Data stores

• Data flows

In data and process modeling, a(n) ____ model shows what the system must do, regardless of how it will be implemented physically.

• operational

• physical

• logical

• relational

In a DFD, the Gane and Sarson symbol for a process is a ____.

• rectangle with rounded corners

• line with a single or double arrowhead

• flat rectangle that is open on the right side and closed on the left side

• rectangle, which may be shaded to make it look three-dimensional

In a DFD, the Gane and Sarson symbol for a data flow is a ____.

• rectangle with rounded corners

• line with a single or double arrowhead

• flat rectangle that is open on the right side and closed on the left side

• rectangle, which may be shaded to make it look three-dimensional

A spontaneous generation process is a process that has ____.

• no input

• at least one output and one input, but the output obviously is insufficient to generate the input shown

• no output

• at least one input and one output, but the input obviously is insufficient to generate the output shown

A black hole process is a process that has ____.

• no input

• at least one output and one input, but the output obviously is insufficient to generate the input shown

• no output

• at least one input and one output, but the input obviously is insufficient to generate the output shown

Because diagram 0 is a(n) ____ version of process 0, it shows considerably more detail than a context diagram.

• contracted

• exploded

• condensed

• extrapolated

____ is the process of drawing a series of increasingly detailed DFDs, until all functional primitives are identified.

• Leveling

• Balancing

• Indexing

• Exploding