Asp.Net 2.0 Data Access Articles

Are you looking for a good article to learn about data access in Asp.net 2.0?
There is a place to get it.First 10 of 50 articles are now available in
http://www.asp.net/learn/dataaccess

It covers following topics:

1. Creating a Data Access Layer
2. Creating a Business Logic Layer
3. Master Pages and Site Navigation
4. Displaying Data With the ObjectDataSource
5. Declarative Parameters Programmatically
6. Setting the ObjectDataSource's Parameter Values
7. Master/Detail Filtering With a DropDownList
8. Master/Detail Filtering With Two DropDownLists
9. Master/Detail Filtering Across Two Pages
10. Master/Detail Using a Selectable Master GridView with a Details DetailView