What does this development mean for existing ADO.NET classes like Adapters and DataReaders?
Are they becomming absolete or is there still a specific use for them?
In other words, will LINQ give you as much control as those classes do?

The DataSet always seemed to me like te ideal place to put relational data, because of it flexibility and genericity, but in my mind was troubled by large memory use and inability to extend it.
Will LINQ bring the same flexibility to ordinary objects and will there still be a use for the DataSet (in this or in a changed form)?

Marcel