Data Modeling › Data Model › Identify Attributes and Unique Identifiers for the Entities

Identify Attributes and Unique Identifiers for the Entities

The third step of entity relationship modeling involves the following:

• Identifying the attributes (fields) that belong to each entity
• Selecting the attributes that serve as a unique identifier for each entity
• This unique identifier is also known as the primary key for the entity.
• Normalizing the entities
• Generalizing the entities

The following sections discuss each of these in more detail.