Exam 4: Documenting Information Systems

Systems flowcharts portray business process activities, stores of data, and flows of data among those elements without presenting the physical details of those elements.

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: (1) Data store (in a data flow diagram) (8) Display (2) Entity or process (in a data flow diagram) (9) Disk (3) External entity (in a data flow diagram) (10) Paper file (4) Document (11) Off-page connector (5) Manual keying (12) Start/stop (6) Computer process (13) Annotation (7) Manual process (14) Batch total Required: Match each symbol to its corresponding description by writing the description number below the each symbol.

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

A(n) ______________________________ is a graphical representation of a business process, including information processes and the related operations processes.

In a data flow diagram (DFD) data store symbols are represented by ______________________________.

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.

On a logical data flow diagram (DFD), data flows:

In a physical data flow diagram (DFD), a bubble or circle could be used to specify each of the following except:

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

On a systems flowchart the start/stop symbol can also be an external entity.

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

A _______________ depicts a system's infrastructure.

Internal entities are included on data flow diagrams (DFDs) but not on systems flowcharts.

In a data flow diagram (DFD), a square represents an internal entity.

The following systems flowchart segment depicts a user's query of a data store to view information on a computer screen. Which statement is correct?

Data entering from outside a system is depicted on a data flow diagram (DFD) as coming from a(n) ______________________________ entity.

A(n) ______________________________ is the top-level, or least detailed, diagram of a system depicting the system and all its activities as a single bubble and showing the data flows into and out of the system and into and out of the external entities.

A process in which successive layers of data flow diagrams (DFDs) are constructed by "exploding" the bubbles on a less detailed DFD to show more detailed data flows is called:

An acceptance stub is a data flow that leaves a bubble but does not go to any other bubble or file and indicates processing that is performed in other than normal situations.

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