The Relationship Between Use Cases and Data Flow Diagrams Is

question 75

Multiple Choice

The relationship between use cases and data flow diagrams is:

• A)Use cases tend to be developed with users to make sure the analyst has fully captured the processes and relationships;DFD's are built upon the use cases to more fully formally understand the processes involved
• B)Both are tools in a systems analysts toolbox,although they do unrelated things
• C)Use cases are developed by users exclusively;while DFD's are developed by analysts exclusively
• D)Use cases come out of JAD sessions and clarify what was discussed by users in those sessions;DFD's come out of analysts interviews.
• E)They are the same thing - use cases are process models using the DeMarco and Yourdon notation;and DFD's are process models using the Gane and Sarson notation.

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Definitions:

Carbon Dioxide

An odorless, colorless gas resulting from the burning of carbon and organic molecules, and emitted during breathing, which is assimilated by plants for use in photosynthesis.

Citric Acid Cycle

A series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into carbon dioxide and chemical energy.

Glucose Molecule

A simple sugar and important energy source in living organisms, serving as a primary substrate for cellular respiration and a basic building block for carbohydrates.

Cellular Respiration

A metabolic process that occurs in cells where oxygen is used to break down glucose, producing ATP as energy for the cell.