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. 6. ___________ classes are used to create the interface that the user sees and interacts with as the software is used.
A. Controller
B. Entity
C. Boundary
D. Business
Answer:A
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. 6. ___________ classes are used to create the interface that the user sees and interacts with as the software is used.
A. Controller B. Entity C. Boundary D. Business
Explanation: The answer is self-explanatory.