Exam-style question
Try this first
Which statement best describes an entity relationship diagram?.
- A.It shows entities, their attributes and the relationships between entities.
- B.It shows only the program code needed to create a database.
- C.It lists every possible value that an attribute can contain.
- D.It replaces the need to identify entities and their attributes.
Model answer
What a good answer should say
- It shows entities, their attributes and the relationships between entities.
Explanation
Why this works
An entity relationship diagram represents a data model visually. It should communicate the entities involved, the attributes belonging to them and how the entities are related.
Common mistake
No common mistake is linked to this question yet.