1. What is the difference between a domain model class diagram and an ERD
A domain model class diagram represents the conceptual model of a system, focusing on the entities, relationships, and attributes that describe the domain of the system. It typically includes classes, interfaces, and their relationships in a more abstract and conceptual way.
On the other hand, an Entity-Relationship Diagram (ERD) is a database model that represents the logical structure of databases, focusing on entities (tables), their attributes, and the relationships between them. ERDs are more technical and detailed, showing how data is stored and organized within a database.
In summary, the main difference is that a domain model class diagram is more conceptual and focuses on the structure of a system, while an ERD is more specific and focuses on the logical structure of a database.