A Logical data model is the version of a data model that represents the business requirements (entire or part) of an organization and is developed before the physical data model. A sound logical design should STREAMLINE the physical design process by clearly defining data structures and the relationships between them. A good data model is created by clearly thinking about the current and FUTURE business requirements. Logical data model includes all REQUIRED entities, attributes, KEY GROUPS, and relationships that represent business information and define business rules.

A Logical data model is the version of a data model that represents the business requirements (entire or part) of an organization and is developed before the physical data model. A sound logical design should streamline the physical design process by clearly defining data structures and the relationships between them. A good data model is created by clearly thinking about the current and future business requirements. Logical data model includes all required entities, attributes, key groups, and relationships that represent business information and define business rules.