BTEC DIT COMP3 Notation, Comm. Tech. and Cloud Storage

Draw the Entity symbol for Data flow diagrams

What does this symbol mean in a Data flow diagram?

• Data Store

• Process

• Entity

• External Process

Who had the lowest Orders?

• Ralph

• Bill

• Janet

• Frank

Name one benefit of Data flow diagrams

• Data flow diagrams show the hardware required

• You can quickly see how data moves through a system

• Data flow diagrams use the same symbols as other flow charts

• Data flow diagrams are hard to understand

Name two benefits of flow charts

• It shows the order in which tasks are completed with a system

• Anyone without prior knowledge can understand a flow chart

• It can help a person to see where the problems are within a system

• Changes can be easily made without re-drawing the flow chart

What could this picture be used to represent in a system diagram? (select 2)

• Customer

• Helpdesk

• Data store

• User Communication Method

Who had the highest Total Sales?

• Ralph

• Sam

• Janet

• Frank

What does this symbol mean in a flow chart?

What does this symbol mean in a flow chart?

• Customer

• Start/End

• Decision

• True/False

What does this symbol mean in a flow chart?