ERD Symbols and Relationships Quiz

What symbol represents an entity type in ERD?

• Rectangle

• Oval

• Diamond

What symbol represents an attribute in ERD?

• Rectangle

• Ellipse

• Diamond

What type of relationship does a diamond symbol represent in ERD?

• One-to-One

• One-to-Many

• Relationship between entities

What is the purpose of cardinality in ERD?

• To indicate the number of instances in one entity that can be associated with the number of instances in another entity

• To indicate relationships

• To define an entity

What does a double rectangle represent in ERD?

• Weak Entity

• Relationship

• Composite Entity

How is a one-to-one relationship represented in ERD?

• Single line

• Double line

• Solid line with '1' on both ends

What does a dashed oval represent in ERD?

• Derived Attribute

• Regular Attribute

• Composite Attribute

How is a many-to-many relationship represented in ERD?

• Single line

• Double line

• Double line with 'M' on both ends

What symbol is used to represent a weak relationship in ERD?

• Double diamond

• Double oval

• Single diamond

What symbol is used for a multi-valued attribute?

• Double oval

• Single oval

• Rectangle