What is the difference between metadata elements/fields that contain purely or primarily descriptive information and those that are indexed?

Undergraduate Students: Please answer these questions specifically in the body of your paper, using examples from your reading.
1. What is resource description? What are some other terms often used to designate the same process, as well as some differences in the use of these terms?
2. What is the difference between metadata elements/fields that contain purely or primarily descriptive information and those that are indexed? What functions does each serve for users? What is the difference between metadata values that are entered in a free text form and those that must be entered in a standardized or controlled form? What functions does each serve for users? Which kinds of values are meaningful for hyperlinking and navigation among resources that share common characteristics of interest to users?
3. What is the difference between Simple and Qualified Dublin Core?

4. What distinction can be made between the original 15 Dublin Core elements and their original element refinements, on the one hand, and elements and refinements added at a later time? Why is this distinction useful to make? Why are these later elements and refinements not covered in this book?
5. Find and list at least three examples of diverse kinds of functionality enabled within different digital collections. (Make sure to list the name of the collection and its URL). What options does the collection offer users for such functions as basic keyword searching, fielded searching, application of search limits, browsing, hyperlinking, indexing, and navigation? For this exercise, review especially Section 1.3, “What Does Metadata Do? On pages 9‐10, and Section 2.1.1.5, “Element Functionality” on pages 34‐37 of the book.