Stefan Edlich, Jim Paterson, et. al.
Chapter 3: 002.02 Comparing the Object and the Relational Data Model
Chapter 5: Quick Start
Chapter 8: 002.03 Client/Server Mode
3 free chapters, Apress, 2006, ISBN 1-59059-656-0.
DOWNLOAD Chapter 3 (PDF), LINK Chapter 5,DOWNLOAD Chapter 8 (PDF)