What would help me better understand the DAL and to my mind supplement the book ("Professional DotNetNuke Module Programming"), is a picture / an overview of the different classes and methods for retrieving data. In other words an overview of the following classes and methods with regards to data retrieval: Info.vb, Controller.vb, IHydratable Fill method, IDataReader, (Sql)DataProvider (and perhaps
SqlHelper.ExecuteReader and SqlHelper.ExecuteNonQuery) including the datatypes of the parameters and outputs passed between them. Any chance of posting such an overview?

The book covers those interactions in quite a bit of detail, I guess I would need to know more about what you are looking to accomplish here?

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Mitchel Sellers
Microsoft C# MVP, MCITP
Director of Development
IowaComputerGurus Inc.

My blog for .NET and DotNetNuke info

Author of "Professional DotNetNuke Module Programming"

Tech Editor on "Visual Studio 2010 six-in-one" and "Pro C# 4.0"

Your book does indeed cover a lot of detail on these subjects. The details though make it harder to see the overall picture. The overview mentioned in my post above would help, but also showing screenprints of the ultimate result earlier on in the book would make it easier to see what al the details will in the end result in. They make it easier to digest all the details.