technology-evolution

The Preface to the Third Edition of Data and Reality by Steve Hoberman reflects on the technological landscape of 1978, highlighting key innovations such as the Sony Walkman, the first cellular mobile phone system, and the emergence of relational databases including Oracle Version 1. Hoberman emphasizes the timeless relevance of William Kent's book, which transcends technology changes by addressing the psychological and philosophical aspects of data management. The preface also introduces fundamental data modeling concepts like existence, identity, attributes, relationships, behavior, and modeling through a practical bank account example, and outlines the updates made in the third edition to enhance understanding and applicability.