The book is composed of four parts: modeling concepts, analysis/design, implementation and large system issues.
The first part describes the main concepts on object oriented modeling. The topics on object relationships (association, aggregation, generalization) are excellent.
The second part, I consider that contains the best chapters. There are a lot of advices on how to develop database applications following object orientation and on how to choose a data management approach.
The third part, about implemmentation, has good and bad chapters. I don't like the chapters on relational databases. They include valuable information on how to map classes to relational databases but some space is wasted with basic concepts on relational databases and the main example is developed using Microsoft Access.
The last part is the smallest one and contains introductory topics on distributed databases, integration of applications and reverse engineering.
The class diagrams are in OMT notation.