LO5 Flow of Information

Question 1

What is Qualitative Data?

Answer 1

Descriptive data, often composed of text.

Question 2

What is Quantitative Data?

Answer 2

Measured data, often in the form of numbers, percentages or statistics

Question 3

What is a level 0 Data Flow Diagram

Answer 3

Level 0 data flow diagrams show the transfer of data in a simple manner.
Commonly Generalised and not shown separately for a more basic overview.

Question 4

What is a Level 1 Data Flow Diagram?

Answer 4

Level 1 data flow diagrams show the transfer of data in a more detailed manner. Processes are shown separately, for a more complex and realistic overview.

Question 5

Impacts that Affect the Flow of Information?

Answer 5

Reasons include:
Information not being filled incorrectly.
Computer system failure.
Human Error.
Breakdowns in human communication.

Question 6

What does the arrow represent in a DFD?

Answer 6

Data Flow

Question 7

What does the rectangle with soft edges represent in a DFD?

Answer 7

Process

Question 8

What does the rectangle with sharp edges represent in a DFD?

Answer 8

External Entity.

Question 9

What does the Rectangle with sharps edges and a small box cut into the shape represent in a DFD?

Answer 9

Data store