Attributes

Types of Attributes

Simple Attribute - Atomic Values.

Example: ssn

Composite Attribute - Made up of more than one simple attribute.

Example: firstname + mi + lastname

Derived Attribute: Calculated from existing attributes

Age: Derived from DOB

Student: Entity Name: Composite Attribute Student ID: Simple Attribute Age: Derived Attribute PhoneNo: MultiValued Attribute (The Student can have more than one phone number)