Visual Forms of Notation Quiz

What does a data flow diagram (DFD) show?

• How to design a website

• How to write a computer program

• How to create a database

• How data is used within a process or system

What does an oval represent in a data flow diagram (DFD)?

• A process or system

• A data store

• A security checker

• An entity providing or receiving data

What does a rectangle with one vertical line to the left represent in a data flow diagram (DFD)?

• A process or system

• An entity providing or receiving data

• A data store

• A security checker

What is a level zero DFD also called?

• Top level DFD

• Basic DFD

• Primary DFD

• Initial DFD

What is the main difference between data and information in information flow diagrams (IFD)?

• Data is exchanged, information is processed

• Data is raw, information has meaning

• Data has meaning, information is raw

• Data is processed, information is raw

What does an information flow diagram (IFD) generally show?

• How to design a website

• How to create a database

• How information is exchanged between entities

• How data is used within a process or system

What is the main difference between a data flow diagram (DFD) and an information flow diagram (IFD)?

• DFD shows raw data, IFD shows processed data

• DFD shows information exchange, IFD shows raw data

• DFD shows how data is used, IFD shows how information is exchanged

• DFD shows processed data, IFD shows raw data

What is generally represented by a rectangle in a data flow diagram (DFD)?

• A process or system

• A data store

• A security checker

• An entity providing or receiving data

What is generally represented by an oval in a data flow diagram (DFD)?

• A security checker

• A data store

• A process or system

• An entity providing or receiving data

What is generally represented by a rectangle with one vertical line to the left in a data flow diagram (DFD)?

• A security checker

• An entity providing or receiving data

• A data store

• A process or system