Transferring Data (bi-directional)
Server requests data transfer, client approves and transmits or stores data
Request for data (by server) may be accompanied by an existing agreement or a new proposal for agreement
Requests for data can be made by specifying a name or a category (note that a single name may refer to many elements).
Some data elements and sets of data elements have universally known names: these are the
classes
Joseph Reagle
