1. Building A Repository for Digital Objects
Allen Mullen
Texas State Library & Archives Commission

2. Overview
Considerations for Developing a Permanent Repository for Digital Objects
Texas State Library’s Electronic Publications Repository project

3. Background Publication Repositories vs. other Digital Object projects
Standards in use

4. Types of Digital Object projects
Records management preservation
Digital image access/preservation projects
Electronic journal access/preservation projects

5. Government Publication Repositories
National Library of Australia
NEDLIB
National Library of Canada
GPO and U.S. States

6. Standards and models Open Archival Information Systems (OAIS)
Document Object Model
Preservation metadata
XML framework

7. OAIS NASA developed; proposed ISO standard
Framework for archive architecture; establishes concepts and processes
Processes: Ingest, Data Management, Archival Storage, Access, and Administration
Data object interpreting Representation Information produces Information Object

9. Document Object Model
W3C Recommendation for an open standard to dynamically access and update documents
Potential for Preservation - work on basis of collections sharing common characteristics

10. XML Framework
The Platform and The Content must be “persistent” for preservation
Collection context - “infrastructure independent” platform for data exchange
Presentation context - XML based objects for platform independent migration

11. Preservation Metadata Standards
National Library of Australia, CEDARS, NEDLIB and Library of Congress
facets - descriptive, access, administrative, technical, legal
OCLC/RLG work

12. Other considerations Migration or emulation? Authenticity
Version control
persistent locator

13. Texas Government Information Repository
Background
Key considerations
Key decisions
Project progress

14. Repository Background
Migration of Government Publishing
TRAIL and Dublin Core
Print Publication Depository system

15. Key Considerations What to collect? How to collect? How to process?
How to store?
How to preserve?
How to access?

16. Challenges of Publication Framework
Multiple formats for publications
Multiple files comprising single publications
Multiple versions of publications
Relative vs. Dynamic linking
Difficult formats

17. Key Decisions Collection Development Policy Manual harvest
Collections-based processing; conversion to XHTML (or other XML)
Archives and redundant depository
Migration or emulation?
Enhanced Dublin Core

18. Project progress Research phase completed RFIs issued and evaluated
Integration of digital images projects
Purchasing/implementation in Autumn 2001
Integration via Z39.50
Future work to be done