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2003

ROSA: A Data Model and Query Language for e-Learning Objects

8 years 5 months ago
ROSA: A Data Model and Query Language for e-Learning Objects
Learning Content Management Systems (LCMS) supports e-learning applications with storage and efficient access for e-learning objects (LO)s. ROSA is a LCMS built as a semantic layer on the top of an XML native DBMS, Tamino. Together, ROSA and Tamino, offer instructional designers a semantic view of e-learning content. In this paper, we present ROSA Data Model and Query Language, designed as an extension to RDF data model and RQL query language. The Data Model is structured around the LO modeling and their relationships, adapted to the elearning domain. An algebra defines valid operations over LO data. Queries are formulated in ROSAQL that extends RQL with joins, graph navigation and recursion.
Fabio Porto, Ana Maria de Carvalho Moura, Adriana
Added 01 Nov 2010
Updated 01 Nov 2010
Type Conference
Year 2003
Where PGLDB
Authors Fabio Porto, Ana Maria de Carvalho Moura, Adriana Pereira Fernandez, Abílio Fernandes, Fábio José Coutinho da Silva, Gilda Helena Bernardino de Campos, Laura Coutinho
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