DUE TO SPAM, SIGN-UP IS DISABLED. Goto Selfserve wiki signup and request an account.
The DataContext interface is probably the most central construct in MetaModel. The DataContext can be compared to a "connection" to the datastore that you're working with. The DataContext exposes methods to explore the schema model and to query the data of a datastore.
The sub-type UpdateableDataContext further adds the ability to update/change data contained in the datastore.
Exposing the schema model (read more)
...