How can you determine whether an object is an entity or an attribute?

Answer 1

Information contributed by Ramona Maxwell:
An entity is a primary object in your database design and an attribute would further describe that object. In human terms if you are the entity, your attributes might be height, age, hair color and so on. In a sales database 'customer' might be an entity whose attributes could include name, address or account number. Entities and or their attributes are mapped in terms of their relationship to one another when designing your database. Helpful information on Entity Relationship Modeling can be found at the following link:
http:/enzperiodzwikipediazperiodzorg/wiki/Entityzhyphenzrelationship_model