Entity Diagram Database. People customers or other objects relate to each other in an application or a database. An entity relationship diagram erd shows the relationships of entity sets stored in a database.
An entity in this context is an object a component of data. An entity relationship diagram erd is a type of diagram that lets you see how different entities e g. An entity relationship er diagram is a type of flowchart that illustrates how entities such as people objects or concepts relate to each other within a system.
Entities attributes and relationships.
In a simple relational database implementation each row of a table represents one instance of an entity type and each field in a table represents an attribute type. In a simple relational database implementation each row of a table represents one instance of an entity type and each field in a table represents an attribute type. An entity set is a collection of similar entities. Er diagrams are most often used to design or debug relational databases in the fields of software engineering business information systems education and research.
