Complete the code to define an entity in an ER model.
Entity [1] represents a real-world object or concept.
An entity is a real-world object or concept represented by a set of attributes.
Complete the sentence to describe a primary key in an ER model.
A primary key uniquely identifies each [1] in an entity set.
The primary key uniquely identifies each entity in an entity set.
Fix the error in the relationship cardinality description.
A one-to-many relationship means one [1] can be associated with many entities.
In a one-to-many relationship, one entity on one side relates to many entities on the other side.
Fill both blanks to complete the ER diagram notation for a weak entity.
A weak entity is represented by a [1] rectangle and has a [2] key.
Weak entities are shown with double-bordered rectangles and have a partial key that depends on a related strong entity.
Fill all three blanks to complete the definition of a relationship set in ER modeling.
A relationship set [1] entities from [2] entity sets and is represented by a [3] diamond.
A relationship set connects multiple entities from different entity sets and is shown as a diamond (rhombus) shape.