Skip to main content
grasp.study
About
Explore
Pricing
Log in
Try it for free
Back to course
👋
Welcome to a Grasp lesson
Create a free account
to keep studying and create your own study path.
Database Systems Management
·
Module 6
Advanced ERD: Composite Entities
1
The Challenge of M:N Relationships in Relational Databases
Explain why M:N relationships cannot be directly implemented in a relational database.
2
Understanding Composite Entities
Define what a composite (bridge/associative) entity is and explain its purpose.
3
Composite Keys in Composite Entities
Identify the primary key of a composite entity, which is typically a composite key formed from the foreign keys of the parent entities.
4
Resolving Many-to-Many Relationships with Composite Entities
Convert an M:N relationship into two 1:M relationships using a composite entity.
5
Modeling Many-to-Many Relationships with Composite Entities
Draw an ERD that includes a composite entity to resolve an M:N relationship.
Previous module
Entity-Relationship Diagram (ERD) Fundamentals
Next module
Practical ERD Application