Features Of Entity-Relationship Model
Entity-Relationship Model: E-R Model Definition: Entity-Relationship Model is a logical representation of data in an organization. It views the entire system as a collection of entities related to one another. It is used to describe the elements of a system and their relationship.E-R models represent different things as entities. The connections among different entities are represented by relationships. These entities and relationships can be transformed into relational models. This model can be designed in the database using the relation model. It was introduced by PETER CHEN in 1976 Advantages of E-R Model: The advantages are as follows: 1. Conceptual Simplicity: E-R model represents the concept of a database along with its entities and relationship in an easy way. It becomes even easier to create and manage the complex database. 2:Visual Representation: E-R model provides a visual representation of data and the relationship among data. 3. Effective Communication To...