Before we move further, it is useful to make some important distinctions:
1. Level: Item vs Collection
Item is a single object (a book, a video etc.). Collection is a set of similar objects (a collection of similar books, a collection of similar artefacts etc.). Under a collection there are items.
Item level description describes a single item (the book itself – item level metadata). Collection level description describes the entire collection, which gives a sense of the scope of the entire collection of individual items, explain why the particular items belong to the collection (might contain information about the institution responsible for the collection, contributors to the collection etc).
Definition is required upon what is an item according to the requirements. For example in a library a book is a typical item. However a book can be a collection of chapters! A library may own only a page of Gutenberg’s bible, then the page is the item! Continue reading