As with other academic work, proper citation is essential - this acknowledges scholarship and allows the data to be located more easily. Standards for data citation are still in development, but the UK Data Service has a useful basic guide (see below).
The inclusion of a DOI (Digital Object Identifier) or a URI (Uniform Resource Identifier) can help with locating the data as well as allowing links to be made from related publications. Details about data DOIs can be found from the DataCite metadata services information.
DOIs (Digital Object Identifiers) can be assigned to individual elements, or to the whole dataset.
The University of Southampton via ePrints Soton is able to provide a DOI for data subject to the data meeting certain criteria [policy in development]. For further information about DOIs go to DOI for Data or contact ResearchData@soton.ac.uk.