Entity Relationship Data Model

Data models describes the data and connection that are stored in the database and one of the structures that form a model is called an entity relationship. Entities relationship data model is used for creating models, defining entities and describing contents stored in the database and the relations between them. Another part of the data model is the entity, that a user wants to track field,tables and records. Attributes involve specific field such as last names. Identifiers are a key to database design and normalization maintains tables.