Michael Day Extending metadata for digital preservation , Ariadne , Issue 9, May 1997. This is a process, not a single step.
Libraries have to think of digital collection maintenance as an ongoing task.
However, the rise of more complex formats and much bulkier information mean that the total amount of work continues to increase. Our hope is that cooperation between libraries can reduce the work that each one has to do. Libraries can improve accessibility and reduce costs by converting their old materials to digital formats. This is the original version of and article published in Scientific American , March 1997. Scanning is cheaper than keyboarding.