COMPUTER SCIENCE AND ENGINEERING
DATABASE MANAGEMENT SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ted Codd
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Bill Gates
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Peter Chen
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None of the above
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Detailed explanation-1: -Peter Chen, the father of ER modeling said in his seminal paper: “The entity-relationship model adopts the more natural view that the real world consists of entities and relationships. It incorporates some of the important semantic information about the real world."
Detailed explanation-2: -Peter Chen (a.k.a. Peter Pin-Shan Chen), currently a faculty member at Carnegie-Mellon University in Pittsburgh, is credited with developing ER modeling for database design in the 1970s.
Detailed explanation-3: -The basic Chen diagram is the original entity relationship diagram that was developed by Peter Chen in 1976. The diagram is a graphical representation of entities and their relationships to each other. (Figure 3.7) An entity defines a person, place, thing, event or role that you want to keep data about.
Detailed explanation-4: -Chen’s database notation is useful for modeling the basics of entities and relationships, because it presents an abstract view of the associations. These diagrams are a good entry step to understanding the database structure, especially for basic databases or examples.