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These requirements will be used to evaluate architecture alternatives.
Once an alternative has been selected, we will return to these requirements to determine what functionality must be added from other systems and/or written from scratch.

User requirements

  1. DLP staff can easily create new collections.
  2. DLP staff can easily manage existing collections.
  3. Faculty members, librarians, and others outside the DLP can easily create
    collections using DLP-supported resources.
  4. Other digital library professionals can easily index, search, and obtain
    metadata in DLP collections.

Functional requirements

  1. [Must The repository is able to store/search/deliver both text-centric and
    image-centric collections.
  2. [Want Audio and video objects can be stored/delivered.
  3. [Want Arbitrary document types (PowerPoint files, music notation files, etc.)
    can be stored/delivered.
  4. [Must All metadata stored in the repository conforms to (or is easily exportable
    to) a widely-recognized standard format.
  5. [Want A wide variety of standard metadata formats can be stored, including MARCXML, DC,
    METS, and VRA Core.
  6. [Want Metadata about a single object can be transformed into multiple formats.
  7. [Maywant "Exceptions" to metadata transformations can be stored, either as full records in
    an alternate format, or as single fields that override the transformed version.
  8. [Must It is possible to add custom fields to existing metadata schemas.
  9. [Must It is possible to use completely arbitrary metadata schemas.
  10. [Must Preservation is addressed, preferably in a way that is compatible with
    [OAIS|], preferably
    checking file integrity using checksums, and preferably using an automatic connection to HPSS.
  11. [HighWant The repository system is based on open-source software, so we don't
    have to depend on someone else to add features we need.
  12. [Must The repository is able to manage data at many levels of granularity.
  13. [Must Access privileges to materials in the repository can be managed at many
    levels of granularity.
  14. [Must There is a facility for searching across all collections held by the
  15. [Must External search systems can be easily connected to the repository, in order to
    deal with specialized search fields.
  16. [Must Metadata about multiple versions of files can be maintained, including master and delivery
  17. [Want Repository materials (both media and metadata) can be easily accessed by course management
    systems, including Oncourse CL.

Open questions

  1. Will we include collection-level information in the repository? This includes things like the web sites that host collections, and the timeline of Cushman's life.
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