An entity relationship (ER) diagram is a visual way to show how information is organized in a database. It lets people see the main entities, the information stored about them and the relationships ...

ERDs provide a visual starting point for database design that can also be used to help determine information system requirements throughout an organization. After a relational database is rolled out, ...

A table in a database holds the attributes for one entity only. Data can then be added in the form of records. Rather than storing information in one table, relational databases store data across ...