About kopal

Project Timetable
Work Packages

Technical Aspects

Object Specification

koLibRI -
kopal Library for Retrieval and Ingest
sponsored by Federal Ministry of Education and Research

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kopal Solution

The kopal solution consists of a further developed version of IBM Deutschland GmbH's DIAS-Core and the kopal tools developed by the two partners, Niedersaechsische Staats- und Universitaetsbibliothek Goettingen (Goettingen State and University Library) and the German National Library. DIAS-Core is based on standard IBM software components.

kopal Tools

The kopal long-term archive system offers various functionalities for the provision of metadata and of archival data. The German National Library and the Goettingen State and University Library will build agreed-upon  open source software products onto the DIAS-Core. This customizing to one's own system and needs is an explicit desire, since one of the objectives of the project is cooperative use of the software.

A beta release of the kopal tools including source code, documentation and examples to demonstrate the modular design you can find here:  koLibRI - kopal Library for Retrieval and Ingest.

The access tools provide for the institutions' structured access to their data holdings so that the institutions can, in turn, make their holdings available to their users.

The kopal ingest tools support the compilation and preparation of data for the archive as a data package meeting the object specification.


As part of the kopal project, the German National Library, the Goettingen State and University Library, the Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH Goettingen (GWDG), and IBM will develop a cooperative solution for long-term archiving. This will be based on  DIAS-Core, which is the core of IBM's Digital Information Archiving System already used by the Koninklijke Bibliotheek (National Library of the Netherlands). In conformance with OAIS standards for archival systems, it manages the stored data and provides an environment for a variety of preservation strategies.

DIAS' clients and precisely defined interfaces for importing and exporting data make it possible to integrate archive use into quite diverse work flows and institutions. Through the use of well-established standard software components such as IBM Content Manager and IBM Tivoli Storage Manager, long-term stability, performance, and scalability are assured.

Specification of DIAS Interfaces

 Digital Information Archiving System - SIP Interface Specification
PDF file 258 KB (March 2006)

 Digital Information Archiving System - DIP Interface Specification
PDF file 243 KB (March 2006)

DB2 Content Manager

DB2 Content Manager helps firms to efficiently process large quantities of information. It is a comprehensive document management system which is built on a client/server foundation and which is used for image processing, archiving, and transaction processing in the business environment. Incoming paper documents are digitized by a scanner; indexed; associated with the relevant application; and stored on a magnetic disk, on optical disk, or in a tape archival system. In addition, electronic documents, printed files, digital photographs, video sequences, and audio files can be archived using Content Manager.

The Content Manager's architecture is based on the client/server model, consisting of a library server, one or more resource managers (object servers), and one or more clients. The heart of the solution, the library server, administers the index and searches for and locates the stored digital objects. These objects are stored in the Resource Managers, but can also be distributed across various enterprise locations. The user has access to the resources, independent of where they are stored.


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German National

Goettingen SUB
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