Next: Extending Sherpa Data Analysis with S-Lang . ... The underlying principle of DMC is to have a service tool through which a pool of applications can store and retrieve their data products from a number of geographically distributed data repositories. ... The DMC is a Digital Library that can be mounted on the top of a Data Grid infrastructure [Pasian 2004, Smareglia 2004] and provides services for manipulating, presenting, discovering, browsing and displaying digital objects. ...