In an ER model, what does a solid line connecting two entities represent?

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Question: In an ER model, what does a solid line connecting two entities represent?

Options:

Correct Answer: A strong relationship

Solution:

A solid line connecting two entities in an ER model represents a strong relationship.

In an ER model, what does a solid line connecting two entities represent?

In an ER model, what does a solid line connecting two entities represent?

Step 1: Understand what an ER model is. It is a diagram that shows how different entities (like people, places, or things) are related to each other.
Step 2: Identify what entities are. Entities are the main objects or concepts in the model, like 'Student' or 'Course'.
Step 3: Look at the lines connecting the entities. These lines show the relationships between them.
Step 4: Notice that a solid line is used to connect two entities. This indicates a specific type of relationship.
Step 5: Learn that a solid line represents a strong relationship, meaning that the entities are closely related and depend on each other.

Strong Relationship – A solid line indicates a strong relationship between two entities, meaning that the existence of one entity depends on the other.