We find that people want systems that can cope in the face of both structured and unstructured information, because you've got your legacy data and information. You're not going to go back and catalogue it. It's really hard and expensive to do this, but you've got new systems and software that are tagging the information correctly and are available. So again, a hybrid is what is needed. I want to return to a discussion of metadata.
Metadata are information describing a resource.
Very often the metadata are indeed the resource itself. They can be created from scratch or extracted from existing information by robots or people. Prevalent metadata properties are record or form based. Each record consists of one or more elements, such as a title, an author, or a subject. Any element has clearly defined semantics.