2 ejemplos de modelo de datos conceptual y físico

Ernesto, miembro de nuestro equipo de trabajo, nos ha hecho el favor de crear este escrito porque domina a la perfección este tema.

Ejemplo: ¿Qué es un modelo de datos conceptual?

# What is conceptual data model to me?

There are many good definition of this term. 
In layman's term, it's the big picture of a Business's data 
domain and processes that occur in it. During the design 
phase of an application or a database, a team creates conceptual, 
logical and physical data model. Some teams combine conceptual 
and logical data model effort while others do only the 
physical data model. Here is a basic example of the 
conceptual data model. 

+-------------+                +-------------+
| Customers   |--------------> |   Address   |
+-------------+                +-------------+
      |
      |
     |/
+-------------+                +-------------+
|   Orders    |<-------------- |   Products  |
+-------------+                +-------------+

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