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DSpace uses a relational database to store all information about the organization of content, metadata about the content, information about e-people and authorization, and the state of currently-running workflows. The DSpace system also uses the relational database in order to maintain indices that users can browse.
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This Database schema is not fully up to date with DSpace 4.0. 2 additional table to store item level versioning information were added to DSpace 3 are currently not represented in this diagram. More significantly, DSpace 5 changes the way many attributes are stored and moves them from DSpaceObjects to the metadatavalue table (DS-1582). |
DSpace 5 database schema (Postgres). Right-click the image and choose "Save as" to save in full resolution.
Most of the functionality that DSpace uses can be offered by any standard SQL database that supports transactions. However at this time, DSpace APIS use some features specific to PostgreSQL and Oracle, so some modification to the code would be needed before DSpace would function fully with an alternative database back-end.
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