Understanding Peter Chen’s: The Entity Relationship Model
1106IFSM4106382
Professor Joseph Walker

Understanding Peter Chen’s: The Entity Relationship Model
In a database, there is a starting point in making your database perform correctly. An Entity-Relationship Model is an actual illustration of structured data from a top-down approach to the database. The end product of the modeling process is an entity-relationship diagram. In the first stage of information system design you use a model during the precondition study to describe information needs or the type of information that is stored in the database. The data model can be used to describe any overview of used terms and their relationship in a certain area of interest like in a database. Dr. Chen introduced this model to show the semantic information of the real world. Many alternatives have appeared since his original model. The goal of this paper is to look at the Chen’s Entity Relationship Model and the current Object–Oriented data Model and compare them.
Entity Relationship Data Modeling (ERDM) had been around, Dr. Peter Chen adopted the entity relationship model and brought it to the front and expanded its use. Dr. Chen added a more natural view that the real world consists of entities and relationships like mothers and daughters or fathers and sons and branch off from their like a family tree. Entity relationship modeling try’s to show data objects and data relationships in two components on a single page by using a language of symbols, labels, and lines. This language acts, in effect, as a table of contents for more detailed information about data attributes, data tables, and data identifiers. Entity relationship modeling can condense what would require pages of written information into a small number of diagrams that attempt to show data structure in the form of boxes, diamonds and circles.