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

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

Options:

  1. A weak relationship
  2. A strong relationship
  3. An attribute
  4. A derived attribute

Correct Answer: A strong relationship

Solution: 

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

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

Practice Questions

Q1
In an ER model, what does a solid line represent?
  1. A weak relationship
  2. A strong relationship
  3. An attribute
  4. A derived attribute

Questions & Step-by-Step Solutions

In an ER model, what does a solid line 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 objects or concepts that we want to represent in the model.
  • Step 3: Learn about relationships in an ER model. Relationships show how entities are connected.
  • Step 4: Recognize the different types of relationships. There are strong (or identifying) relationships and weak (or non-identifying) relationships.
  • Step 5: Focus on the solid line. A solid line in the ER model indicates a strong relationship between two entities.
  • Step 6: Understand what a strong relationship means. It means that one entity is dependent on another entity for its existence.
  • Strong Relationship – A solid line indicates a strong relationship, meaning that the existence of one entity depends on the existence of another.
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