Tupelo is a data and metadata management system based on semantic web technologies. Tupelo provides a variety of generic utilities for managing data and metadata using both best-of-breed semantic database implementations such as [Jena|http://jena.sourceforget.net/] and [Sesame|http://www.openrdf.org/], as well as ordinary storage technologies such as flat files. Tupelo makes data and metadata portable across a variety of Contexts and deployment scenarios, including desktop applications, web-based applications, and more complex distributed architectures. Its use of global identification and explicit semantics means that metadata created and managed with Tupelo can be easily exported and used by a wide variety of RDF-aware tools and technologies.

Tupelo is designed for managing large-scale, complex scientific data and metadata collections. It is also suitable for more conventional digital libraries containing [Dublin Core|http://dublincore.org/] or other standard digital library metadata schemas. Its RDF-based metadata framework can support a wide variety of schemas, from simple, flat-namespace schemas such as Dublin Core, to hierarchical models derived from [XML Schema|http://www.w3.org/XML/Schema], to more web-like models derived from [RDF|http://www.w3.org/RDF/] variants such as [RSS|http://en.wikipedia.org/wiki/RSS].

Features

• Client-side bindings for multiple RDF stores and other content management systems and protocols including
  • Jena
  • Sesame
  • RSS
  • WebDAV
  • URIQA
  • plain filesystem
  • MySQL
  • PostgreSQL
  • Derby
  • H2
  • Oracle with semantic extensions
• Server-side support for content API's including
  • URIQA
  • RSS
• Abstract "Context"/"Operator" model supporting
  • Writing and querying RDF data to heterogeneous stores
  • Reading and writing binary streams
  • Merging/mirroring heterogeneous RDF and content stores
  • Declarative specification and procedural execution of RDF transformation rules
  • Rudimentary ability to execute SPARQL queries and SWRL rules even when backend storage technologies do not support those languages

About the name

The name "Tupelo" comes from the word ["tuple"|http://en.wikipedia.org/wiki/Tuple]. It's also the name of [a kind of gum tree|http://en.wikipedia.org/wiki/Tupelo] as well as [the birthplace of Elvis Presley|http://en.wikipedia.org/wiki/Elvis_Presley#Birth_.26_Childhood].