One of the most common and useful methods for database design is the entity-relationship model, or ER model. In this article, you will learn what the ER model is, how it can help you avoid common ...

If you want to design a data model that represents the structure and relationships of your data, you need to create an entity-relationship diagram (ERD). An ERD is a graphical tool that shows the ...

The three most common types are relational, dimensional and entity-relationship (ER). The most popular database model format is relational, which stores data in fixed-format records and organizes ...

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It is important to illustrate data-modeling details graphically through entity relationship diagrams (ERDs) to facilitate communication. A weak entity is existence-dependent on a strong entity with a ...

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 ...

A data model can show two and a half of the four kinds of business ... This is the first of three articles that will discuss the relationship between entity / relationship models (ERD) and business ...

Abstract: Entity Relationship (ER) model for database design was developed by Peter Chen of MIT in 1976. This is an intuitive and conceptual representation of the data model. It is normally ...

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 data model of this process reflects the business entities and functions of the process. The functions of these business entities are reflected in the relations between the entities on the ...