Explanation
Diagrams are visual representations of information that can be used to define boundaries for business domains, categorize and create a hierarchy of items, and show data sources and their relationships for specific audiences. Diagrams can include various types of models, such as context diagrams, class diagrams, data flow diagrams, entity relationship diagrams, use case diagrams, and swimlane diagrams. Diagrams can help the BA to communicate complex information in a clear and concise way, and to elicit, analyze, and validate requirements with stakeholders. References: CBAP Handbook, CBAP Study Guide, BABOK Guide