1. What is the difference between a domain model class diagram and an ERD?
A domain model class diagram is a diagram that represents the conceptual classes and relationships within a domain or system. It focuses on the entities and relationships between them in a particular context. On the other hand, an Entity-Relationship Diagram (ERD) is a diagram that represents the entities and their relationships in a database system. It focuses on the database structure and how data is stored and related to each other.
In summary, a domain model class diagram is more focused on the conceptual representation of entities and relationships in a system, while an ERD is more focused on the physical representation of entities and relationships in a database system.