In an Entity-Relationship (ER) model, what does a diamond shape represent?

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Q: In an Entity-Relationship (ER) model, what does a diamond shape represent?

Solution: In an ER model, a diamond shape represents a relationship between entities.

Steps: 4

Step 1: Understand what an Entity-Relationship (ER) model is. It is a way to visually represent data and how different pieces of data relate to each other.
Step 2: Identify the shapes used in an ER model. Entities are usually represented by rectangles, and relationships are represented by diamonds.
Step 3: Focus on the diamond shape. When you see a diamond in an ER model, it indicates a relationship.
Step 4: Recognize that this relationship connects two or more entities. For example, if you have a 'Student' entity and a 'Course' entity, the diamond might represent the relationship 'enrolls in'.