DLF Fall Forum
Baltimore, October 25-27, 2004
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Digital Repository Service (DRS)
•4 years of production operation
–1.9 million objects (7.5 TB)
–27 administrative units with custodial oversight
–10 depositing agents
–5 on-campus conversion labs; 3 commercial vendors
•Administrative/technical metadata stored in Oracle 9i
•Content streams stored on RAID file system
•Technical metadata consistent with evolving standards
–Image metadata: NISO Z39.87
–Audio metadata: AES-X098B
–Text metadata: METS text extension schema
Data Dictionary – Technical Metadata for Digital Still Images
Administrative metadata for audio objects – Audio object schema
<http://www.aes.org/standards/b_policies/group-scopes.cfm#SC-06-06>