NISO – National Informational Standards Organization

A Framework of Guidance for Buiilding Good Digital Collections
http://www.niso.org/framework/Framework2.pdf

NISO – Understanding Metadata
http://www.niso.org/standards/resources/UnderstandingMetadata.pdf

World Library Index – 18000 libraries
http://www.libdex.com/
 (opac – online public access catalogue) 

There is a large number of systems used by different institutions to compile data and make it accessible.
Interoperability – the ability of different database systems to communicate, by means of crosswalks. (like a translation)

Crosswalks – a means of transfering data from one system to another, like MARC to DublinCore.
http://www.ncecho.org/ncdc/template.html
In Class assignment – MARC to Dublin Core