Digital Solutions- Data Flow Diagrams

What is the primary purpose of a Data Flow Diagram (DFD)?

• To show the physical layout of a system

• To illustrate the flow of data within a system

• To display the organisational hierarchy

• To represent the timeline of a project

Which of the following is NOT a component of a Data Flow Diagram?

• Data Store

• Process

• Entity

• Timeline

In a Data Flow Diagram, what does a rectangle symbol typically represent?

• Data Store

• Process

• External Entity

• Data Flow

What symbol is used to represent a process in a Data Flow Diagram?

• Circle or Rounded Rectangle

• Arrow

• Rectangle

• Double Line

Which of the following best describes a Data Store in a Data Flow Diagram?

• A place where data is processed

• A place where data is stored

• An external entity that interacts with the system

• The flow of data between processes

In a Data Flow Diagram, what does an arrow symbol represent?

• Data Store

• Process

• External Entity

• Data Flow

Which of the following is an example of an external entity in a Data Flow Diagram?

• Customer

• Database

• Data Flow

• Process

Which of the following is NOT a typical use of a Data Flow Diagram?

• System analysis

• System design

• Project scheduling

• Identifying data sources and destinations

Which of the following best describes the term "context diagram" in relation to Data Flow Diagrams?

• A detailed diagram showing all processes and data flows

• A high-level diagram showing the system and its interactions with external entities

• A diagram showing the timeline of data processing

• A diagram showing the physical layout of the system

What is the primary benefit of using Data Flow Diagrams in system analysis?

• They help in understanding the physical layout of the system

• They provide a clear visual representation of data movement

• They help in scheduling project tasks

• They show the organisational hierarchy