It explains in addition any access restrictions and other requirements specific to a dataset. It describes also the structure of a dataset including descriptions of the files and fields within it. As well as data NDAD collects documentation about datasets. This can include user manuals, reports based on the data in a dataset and instructions for carrying out survey work. Such documentation helps NDAD users to understand data.
All documentation is scanned to enable it to be accessed electronically.
To enable users to find data on subjects of interest to them the NDAD website has free-text and keyword searching facilities . It is possible on-screen either to search on the keywords under a heading, or proceed to a list of Broader, Narrower and Related terms for a particular keyword.