Developing High Quality Data Models

Appendix. A Mapping Between the HQDM Schema and ISO 15926-2

A.1. Introduction

This book presents a data model that is a different take on the same ontological principles behind the ISO 15926-2 data model. As I explained earlier, the reason for the different take is the different purpose that this book has from the ISO standard. In developing the ISO standard, there was considerable pressure to keep the number of entity types as small as possible. This perhaps led to the standard being harder to interpret and use than a larger, more explicit model. By contrast, in the HQDM schema, I present the same ontological principles in such a way that my data model makes it easier to see how the data model should be populated. This produces a data ...