In an ER model, what does a solid line between two entities indicate?

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Question: In an ER model, what does a solid line between two entities indicate?

Options:

Correct Answer: A strong relationship

Solution:

A solid line between two entities indicates a strong relationship in an ER model.

In an ER model, what does a solid line between two entities indicate?

In an ER model, what does a solid line between two entities indicate?

Step 1: Understand what an ER model is. It is a way to represent data and relationships in a database.
Step 2: Identify what entities are. Entities are objects or things in the database, like 'Customer' or 'Order'.
Step 3: Learn about relationships. Relationships show how entities are connected to each other.
Step 4: Look at the lines between entities. A solid line represents a strong relationship.
Step 5: Know that a strong relationship means that the entities are closely related and depend on each other.

Strong Relationship – A solid line indicates a strong relationship (or identifying relationship) between two entities in an ER model, meaning that the existence of one entity depends on the other.