The "CDL Guidelines for Digital Objects, Version 2.0" (CDL GDO) has been updated to include specifications for use of the METS File <file> element. You can find the updated version at http://www.cdlib.org/inside/diglib/guidelines/ .
The revision applies to Sections 2.1, 2.2.2, 3.1, and 3.2.4 only:
To support the orderly transmission and ingest of digital objects, the CDL recommends the inclusion of checksum (MD5, SHA-1, or CRC32) and byte size values in the METS File <file> element. Note that this information is preferred, but not required.
The subheadings within Sections 2.1 and 3.1 have been relabeled, and are now consistently based on METS element names.
Please contact the CDL at oacops@ucop.edu if you have any questions.
By Adrian Turner, CDL Data Acquisitions consultant
The "CDL Guidelines for Digital Objects, Version 2.0" (CDL GDO) has been updated to reflect modified requirements for METS unique identifiers. You can find the updated version at http://www.cdlib.org/inside/diglib/guidelines/ .
The revision applies to Section 3.1 only, and pertains to objects submitted for the CDL’s "Enhanced Service Level”. This service level encompasses the presentation of digital assets via CDL websites. It is also sufficient for increased preservation services in the UC Libraries Digital Preservation Repository.
The METS top-level <mets> tag must contain an OBJID attribute containing an ARK identifier for the digital object. Previously, the CDL GDO indicated that the OBJID attribute could contain a unique local identifier in lieu of an ARK identifier. CDL systems do not support this scenario, however, for objects submitted for the Enhanced Service Level only.
Position title: Manager, Infrastructure and Applications Support (Req. 20070286)
Position location: Oakland, California
Closing date: July 19, 2007
Reporting to the University Librarian and Executive Director, the Manager of Infrastructure and Applications Support is responsible for the technical design, implementation, maintenance, and operations of the common technology enterprise services that support all program and service areas. The Manager is responsible for the Computing and Storage Resource Center comprising a distributed network of CDL-owned resources at three physical locations and for managing the overall integration architecture for computing systems, database management systems, storage systems and network infrastructure. The Manager also provides support to application developers in the CDL’s program areas for the development, staging and production environments, and for collaboration tools supporting the work of CDL and its partners.
Welcome to the new and improved CDLINFO. Written primarily for University of California librarians and staff, this electronic newsletter provides updates about California Digital Library projects, initiatives, and newly available electronic resources.
Beginning in 2007, CDLINFO was reformatted in order to help CDL’s latest news reach users speedily via RSS feeds for either all items that appear in any month or for items in specific areas only. See Subscribe to CDLINFO RSS for more information. CDLINFO will still be sent to subscribers via email, as usual; however, it will arrive monthly instead of biweekly.
If you would like to contribute to CDLINFO, please send email to Robin Davis-White at CDLINFO-SUBMISSIONS-L-Request@UCOP.EDU. If you would like to contact the CDL Web Production Team, email Eric Satzman at esatzman@ucop.edu.
The CDL and Digital Library Services Advisory Group (DLSAG) are pleased to announce the release of the final version of the CDL Guidelines for Digital Objects (CDL GDO), Version 2.0. The guidelines are available in HTML and PDF format at the following URL:
Digital materials of ever-increasing variety and complexity are seen to be worth collecting and preserving by memory organizations — libraries, archives, museums, etc. Materials include objects converted into digital form from existing collections such as manuscripts, maps, visual images, and sound files, as well as “born digital” materials such as web sites.
In order for the CDL to provide effective preservation and access services, these materials need to be represented in a uniform manner. The CDL GDO provides specifications for all new digital objects prepared by institutions for submission to the CDL. It is based upon and supersedes the “CDL Digital Object Standard, Version 1.0″ (May 2001) and the “OAC Best Practice Guidelines for Digital Objects, Version 1.1″ (January 2004).
The CDL GDO includes the following features:
Establishes “sliding scale” requirements, i.e., the more a digital object conforms to the guidelines, the more preservation and access services can be provided for it.
Provides specifications for preparing digital objects, comprising metadata and content files (e.g., digital images, text) packaged using the Metadata Encoding and Transmission Standard (METS) format.
Includes updated recommendations for digital image files.
A draft version of the guidelines was prepared from the fall of 2004 through the winter 2005. Feedback received from CDL contributing institutions was incorporated into this final version of the guidelines.
