This book explains in a clear and concise manner all of the components of OLE DB. Unfortunately it like describing a brick, cement, nails, wood and hammers to someone and expecting them to understand how to build a house. I've read through half the book and I still have no clear understanding of how OLE works. I'm sure the book will become clear once I understand EOL DB.... but then I won't need the book. Sorry Pierre, some people need to build slowly at certain levels of competence and then extend from there once they have grasped the fundementals. This book will not help you if that's your preffered way of learning.