There are two major methodologies used to create a data model: the Entity-Relationship (ER) approach and the Object Model. This document uses the Entity-Relationship approach.

An ER diagram is a high-level, logical model used by both end users and database designers to doc u- ment the data requirements of an organization. The model is classified as “high-level” …

In this book, we will illustrate many concepts by using a business card as a model. By building a business card data model, we will see firsthand how much knowledge we gain of the contact …

Write schemas that represent the data models for the given description. Each movie has a title and year; title and year together uniquely identify the movie. Length and genre are maintained …

Write example data instances in XML and validate them against the model; make sure you like the instance data and consider including some of the examples in the documentation.

There are three intertwined themes in this chapter. First, we introduce you to the design of information structures using the relational model. We shall see that. Tables of information, …

An enterprise data model is a type of integration model that covers all (well, probably most in practice) of the data of an enterprise. Your Enterprise Architecture may include enterprise …