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Which level of Entity Relationship Diagram (ERD) models all entities and relationships ?

/ Software Modelling / By
Which level of Entity Relationship Diagram (ERD) models all entities and relationships ?

A. Level 1
B. Level 2
C. Level 3
D. Level 4

Explanation: Level 1 ERD models all data objects (entities) and their “connections” to one another while Level 3 ERD models all entities, relationships, and the attributes that provide further depth. Thus option b is correct.