A database model that describes the attributes of entities and the relationships among them. An entity is a file (table). Today, ER models are often created graphically, and software converts the ...

Introduce the concepts about relational models. Train students on how to convert a conceptual entity relationship model to a relational model. Introduce students with the reasons and process of ...

The lines between entities within an Entity-Relationship Diagram [ERD] represent an interdependency between the involved entities. In a normalized designed, this interdependency is both semantic and ...

Relational databases aren't designed to make programming against them easier, but to ensure performance, data consistency and concurrency. Seldom do developers work directly with data in the form that ...

A description of the organization of a database. It is often created as an entity relationship diagram. Today's modeling tools allow the attributes and tables (fields and records) to be graphically ...