Dejan Sarka and Davide Mauri have made available the book Data Quality and Master Data Management with Microsoft SQL Server 2008 R2 as a free download on their site
Here is a little blurb about the book
This book deals with master data. It explains how we can recognize our master data. It stresses the importance of a good data model for data integrity. It shows how we can find areas of bad or suspicious data. It shows how we can proactively enforce better data quality and make an authoritative master data source through a specialized Master Data Management application. It also shows how we can tackle the problems with duplicate master data and the problems with identity mapping from different databases in order to create a unique representation of the master data.
For all the tasks mentioned in this book, we use the tools that are available in the Microsoft SQL Server 2008 R2 suite. In order to achieve our goal—good quality of our data—nearly any part of the suite turns to be useful. This is not a beginner’s book. We, the authors, suppose that you, the readers, have quite good knowledge of SQL Server Database Engine, .NET, and other tools from the SQL Server suite.
You can download the book here: http://www.solidq.com/ce-en/News/Pages/Data-Quality-and-Master-Data-Management-with-Microsoft-SQL-Server-2008-R2.aspx