Which of the following is true about DFDs?

An analyst is using a Data Flow Diagram (DFD) to depict the flow of data across a data security company.

Which of the following is true about DFDs?
A . Can be categorized as Logical or Physical
B . Can illustrate a sequence of activities
C . Provide similar information as process flows
D . Are used to model data attributes

View Answer

Answer: A

Explanation:

A Data Flow Diagram (DFD) is a technique that shows the flow of data among processes, data stores, and external entities in a system. DFDs can be categorized as logical or physical, depending on the level of detail and abstraction. A logical DFD focuses on the business functions and data flows, without specifying the implementation details. A physical DFD shows the actual components and mechanisms that are involved in the data flow, such as hardware, software, files, and network connections.

Reference:

• 10.13 Data Flow Diagrams | IIBA® – International Institute of Business …, menu, 10.13 Data Flow Diagrams

• Business Analysis Certification in Data Analytics, CBDA | IIBA®, CBDA Competencies, Domain 2: Source Data

• Introduction to Business Data Analytics: Organizational View, page 16, Figure 6: Data Flow Diagram