A couple of weeks ago I had the opportunity to meet Dr. Peter Chen, inventor of the Entity-Relationship model (ER model). Dr. Chen visited the Microsoft Campus to present a lecture sharing his thoughts on the ADO.NET Entity Framework and how it is related to his original vision of the Entity-Relationship model. [Thank you for Alex Barnett and his blog for this information.] Dr. Chen's original paper on the Entity-Relationship model (ER model), published in 1976, is one of the most cited papers in...