XML -> DataSet -> SQL Database

Hi there, i´m currently working on a tool that reads XML into a Dataset and writes it to a Database. The Dataset is filled with the XML-Data through ReadXML, but i can´t insert the DataSet as is into the SQL Server. Is there a way to insert filled DataSet´s into SQL-Server without pre-existing tables? any suggestions how i can insert different XML-Files into SQL via c#? thanks a lot,best regards jkersch