Draft File Content Element List

Date: April 19, 2004

Assumptions for this project

1. Librarian can pull up info from a catalog, such as WorldCat or other tool.
2. A bibliographic record is optional - users may not be seeing this data from within a bibliographic record.

Data Elements

Item identifiers - Required

• Standard numbers such as ISBN, ISSN, LCCN, OCLC record control number, RLG record control number
• Identifier indicator (so we know what to match on)
• Full title (from item, or fielded as in bib records)

Data provider - Required

• Who created this stuff (use for trust, corrections)

Restrictions on use - Optional

Table of Contents - Optional
Type indicator (so we know what to expect) - Required

• Page images only
  • ID of the file format - Required
  • Sequencing information of the images - Required
  • URL or link to the image - Required if not embedded in file
• Page images and dirty OCR
  • ID of the file format - Required
  • Sequencing information of the images - Required
  • Link between dirty OCR and page images - Required
  • URL or link to the image - Required if not embedded in file
• Accurate, encoded text
  • URL or link to the image - Required if not embedded in file
  • ID of the file format - Required
    • We assume that the file format then drives further required and optional elements
    • What we want, i.e., don't throw away data, maintain:
      • Author/title tagging
      • Hierarchical structure
      • Page numbers from the TOC entries (serve to define extent of coverage, and can link to content. Could also be used to put the contents listing in order if hierarchy can't be used) - Optional

Back-of-the-book Index - Optional
Type indicator, so we know what to expect - Required

• Page images only
  • ID of the file format - Required
  • Sequencing information of the images - Required
  • URL or link to the image - Required if not embedded in file
• Page images and dirty OCR
  • ID of the file format - Required
  • Sequencing information of the images - Required
  • Link between dirty OCR and page images - Required
  • URL or link to the image - Required if not embedded in file
• Accurate, encoded text
  • URL or link to the image - Required if not embedded in file
  • ID of the file format - Required
    • We assume that the file format then drives further required and optional elements
    • What we want, i.e., don't throw away data, maintain:
      • Author/title tagging
      • Hierarchical structure
      • Page numbers from the back-of-the-book entries (serve to define extent of coverage, and can link to content.) - Optional

Cover art - Optional

• ID of the file format - Required
• URL or link to the image - Required if not embedded in file
• Dimensions - Optional (but highly recommended!)

Reviews - Optional

• Review itself - Required (worst case is a text blob)
• Fullness of review (i.e., full review, review quote) - Optional
• Author - Optional
• Source - citation (e.g., journal article) - Optional
• Indicator of source of review (e.g., journal, librarian-supplied, user-supplied) - Optional
• Length - Optional
• URL or link to the review - Required if not embedded in file
• Positive, negative, neutral? - Very optional

Item description (e.g., summary or abstract) - Optional

• Description itself - Required (worst case is a text blob)
• Type (e.g., ONIX short or long) - Optional
• Indicator of source of description (e.g., publisher, author-supplied, librarian-supplied, user-supplied) - Optional
• URL or link to the description - Required if not embedded in file

Subject terms (e.g., keywords, LCSH) - Optional

• One or more subject terms - Required
• ID type of keywords or controlled vocabulary - Required
• Indicator of the source of terms (e.g., publisher, author-supplied, librarian-supplied, user-supplied, other) - Optional

Excerpts - Optional

• Excerpt itself - Required (worst case is a text blob)
• Description of Excerpt (e.g., what chapter?) - Required
• Indicator of source of description (e.g., publisher, author-supplied, librarian-supplied, user-supplied) - Optional
• URL or link to the description - Required if not embedded in file