What is the difference between a typed and an untyped dataset?
A typed dataset is derived from the base DataSet class and has an associated XML schema, which is created at the time of the creation of the dataset, whereas an untyped dataset does not have any associated XML schema.
In an untyped dataset, tables and columns are represented as collections.
Since an XML schema is not created for an untyped dataset, the structure of an
untyped dataset is not known at the time of compilation.