Data Locator
DDCN points to data resources, primarily available on the web, held by other institutions (both free data and from commercial vendors).

Archiving and Dissemination
DDCN also archives and disseminates data. Data sets that can be made available in the public domain are downloadable directly from this website at no charge. To save files from this site, we only require a one-time, free registration.

Data Exchanges
DDCN facilitates data exchanges between researchers and between institutions. For data that cannot be made available in the public domain, DDCN assumes an active role in the brokering of access.