DSpace

• Devika P. Madalli• DRTC, ISI

• Bangalore

What is DSpace?• Digital Object management system• Create, search retrieve digital objects • Facilitate preservation of digital objects• An open source software• Allows open access and digital archiving• Allows building Institutional Repositories

H/W and S/W requirements

• UNIX recommended (Java-based program should run on anything)

• Open source, built on Apache web server and Tomcat Servlet engine

• Uses postgreSQL relational database

What DSpace can do?• Captures

– Digital content in any formats directly from creators (e.g. researcher, authors)

• Describes– Descriptive, technical, rights metadata– Persistent identifiers

• OAI-PMH version 2.0 compliant– Allow metadata creation

Possible Content• Preprints, articles• Postprints • Technical Reports• Conference Papers• Theses/Dissertations• Datasets

– e.g. statistical, geospatial, scientific

• Images– visual, scientific, etc.

• Audio files• Video files• Digitized library collections

File FormatsKnown/supported• TIFF, SGML/XML, PDF

Known/unsupported• Microsoft Word, PowerPoint• Lotus 1-2-3, WordPerfect

Information Model• Communities

– Departments, Labs, Research Centers, Schools…

• Collections • Items • Files (bitstreams)

– Multiple formats - same content– Complex objects – multiple files

Intellectual Property• Click-through license during

submission• Grants DSpace non-exclusive right

to acquire, manage, preserve, distribute the item

• Does not grant DSpace copyright• Copy of license stored with item

Goodies• Modular architecture, well-defined APIs• 100% open source

– Programmed in java– RDBMS and SQL for metadata

• CNRI “handles” for persistent identifiers• OpenURL linking• OAI-PMH for exposing metadata

Backend Technology• Apache, Tomcat, OpenSSL/mod_ssl• Java 1.3, JSP 1.2, Servlet 2.3• PostgreSQL 7, JDBC (rdbms)• CNRI Handle System 5 (persistent

ids)• Lucene 1.2 (index/search)

Metadata standards• Dublin Core only (currently)

– Descriptive metadata only

• OAI-PMH v 2.0 (Open Archive’s Initiative Protocol for metadata harvesting)

Capabilities• Exports in XML format• Next version will have METS

(metadata encoding and transmission standard) for export