What is a collection?
From UA Libraries Digital Services Planning and Documentation
A collection is a gathering of items, or documents, which bear some relation to one another in the mind of the gatherer.
Much of our online content is being drawn from a multitude of analog collections, which are organized by provenance. However, online these may be combined topically to create a variety of digital collections which mix and match content from the analog collections.
In addition, a collection created by a user selecting from a variety of our holdings -- perhaps also including content from elsewhere -- is still a collection. We recognize that whatever we call a digital "collection" may vary from time to time, from place to place, and from user to user.