[Option] InferSchema [Description] 
Ignores any inline schema and infers the schema per the structure of the XML data, then loads the data. If the DataSet already contains a schema, the current schema is extended by adding columns to existing tables. Extra tables will not be added if there are not existing tables. An exception is thrown if an inferred table already exists with a different namespace, or if any inferred columns conflict with existing columns. For details about how ReadXmlSchema infers a schema from an XML document, see Inferring DataSet Relational Structure from XML.