Learn how to use entity-relationship diagrams (ERDs) to visually represent and validate the data model of your system and translate it into a database schema. Sign in to view more content ...

Learn what an entity-relationship (ER) diagram is, why it is useful for data modeling, how to create it, and what types of ER diagrams exist. Sign in to view more content ...

This article considers the simplification of entity-relationship diagrams by the use of meta-entities. Indexes to measure the effectiveness of simplification are suggested and described in the ...

Thus born was the data model. Peter Chen introduced the ERD -- the entity relationship diagram. The ERD allowed data to be addressed in a high-level perspective. To many people, the ERD was the first ...

A data model can, however, portray the data parameters that control business rules. ... Figure 1 shows how terms are represented in a typical entity/relationship model. Shown are examples of both ...

First, make sure that the data model classes that you want to include in your diagram are importable. This means the code with your models should either be available on your sys.path or installed into ...

The process of normalizing a database is explained, progressing from the First Normal Form (1NF) to the Third Normal Form (3NF). A physical ERD diagram is included, demonstrating relationships (1-to-1 ...

The data modelling methods require the support of tools or applications to make the modelling process faster and more accurate. In this research, we develop an application for converting conceptual ...