According to 'A Guide to the Business Analysis Body of Knowledge', the two most common data models are the entity-relationship diagram and what other model?
The BABOK Guide (Chapter 10: Techniques - Data Modeling) identifies the entity-relationship diagram (ERD) and the data flow diagram (DFD) as the two most common data models used in business analysis.
Entity-relationship diagram (ERD): Focuses on the relationships between entities (data objects) in a system.
Data flow diagram (DFD): Illustrates how data moves through a system, including processes, data stores, and external entities.
These two models are widely used to represent and analyze data requirements and system behavior.
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