3b.     Draw and describe the major attribute types.

 

 

 

Non-Key Attributes which can be stored as a single key

 

 

 

The Primary key for the entity

 

 

A foreign key which refers to a field in another entity (NOTE: The underline should be dashed; HTML does not support dashed underlines)

 

 

 

 

An attribute which is calculated

 

 

 

An attribute which contains multiple values (see differences between the two in a later question)