Question Description
I need support with this Databases question so I can learn better.
In Chapter 5, we cover primary and foreign key for entities. Each entity in a DB environment should a primary key (PK). A PK attribute cannot be null. However, a foreign key (FK) is not mandated.
In this activity, you need to present and narrate three database environments with two entities. You also need to show the entities of DB with the PK and FK. Out of three scenarios
– At least one scenario should involve 2-attribute PK,
– At least one scenario should have only 1-attribute PK,
– At least one scenario should have PK-FK relationships.