To show information movement and the order of steps, which diagram notation should be used?

To show information movement and the order of steps, which diagram notation should be used?

• A. Context diagram
• B. Data flow diagram
• C. Use case scenario
• D. Stakeholder diagram

Answer: (B)

Showing how information moves through a system and the sequence of processing steps is best done with a data flow diagram. A DFD highlights how data enters the system from external sources, how it is transformed by processes, where it is stored, and how it moves from one part of the system to another. The arrows depict data flow, and the arrangement of processes and data stores reveals the order in which data is processed, often depicted at different levels to break down complex steps. Context diagrams focus on the system boundary and external users or systems, not the internal flow of data. Use case scenaries describe user interactions in text or storyline form and emphasize behavior and steps from a user perspective, not a formal diagram of data movement. Stakeholder diagrams map roles and relationships, not the data pathways.

Showing how information moves through a system and the sequence of processing steps is best done with a data flow diagram. A DFD highlights how data enters the system from external sources, how it is transformed by processes, where it is stored, and how it moves from one part of the system to another. The arrows depict data flow, and the arrangement of processes and data stores reveals the order in which data is processed, often depicted at different levels to break down complex steps.

Context diagrams focus on the system boundary and external users or systems, not the internal flow of data. Use case scenaries describe user interactions in text or storyline form and emphasize behavior and steps from a user perspective, not a formal diagram of data movement. Stakeholder diagrams map roles and relationships, not the data pathways.