Dataset with multiple Datatables

Hi,

I have an app that uses a typed dataset to persist user data. The dataset
has a multiple tables with multiple table relations. The problem I am
running into is that the user data is dynamic and is not predictable at
design time. What I mean by this is the forms that user inputs data is not
static - it changes dynamically at runtime based on user input. This makes
it difficult to persist the data in a dataset with multiple tables. Each
time the data could be different which means that sometimes tables are not
used or certain fields. In this situation I have used a custom class with
properties and used reflection to save the data. I could get this to work
with reflection however I am having trouble with the multiple tables. If
everything was in one table it would be no problem however I cannot do this
(no nomeralization = bad db design). I have thought about using attributes
with each property which could help me map each field to the correct data
table. Right now my design is having a custom class that encapsulates the
dataset and using the custom class handle the behavior of the typed dataset.
Any suggestions? I would really like to use the typed dataset versus a
custom class because of all the benefits of a typed dataset (concurency, xml
support...).

Thanks