Details
| Original language | English |
|---|---|
| Pages (from-to) | 51-60 |
| Number of pages | 10 |
| Journal | Educational Technology and Society |
| Volume | 7 |
| Issue number | 2 |
| Publication status | Published - Apr 2004 |
Abstract
Edutella is an RDF-based E-Learning P2P network that is aimed to accommodate heterogeneous learning resource metadata repositories in a P2P manner and further facilitate the exchange of metadata between these repositories based on RDF. Whereas Edutella provides RDF metadata repositories with a quite natural integration approach, XML metadata repositories have to overcome considerable incompatibility between XML's tree-like hierarchical data model and RDF's binary relational data model in order to be integrated into Edutella. In this paper we investigate a generic approach for integrating XML metadata repositories into Edutella in terms of an XQuery-enabled native XML database containing SCORM XML metadata. We first propose a triple-like XML-based common data view to cross incompatibility between arbitrary XML data model and RDF data model, then discuss the wrapper program implementation for XML metadata repositories based on the wrapper-like Edutella content provider integration architecture. At last, we propose a generic approach for querying complex XML data schemas in Edutella through QBE (Query by Example), and present the design of a QBE-based SCORM query GUI that can be used to query SCORM XML metadata in Edutella in the RDF syntax.
Keywords
- Peer-to-Peer, Query by Example, Resource Description Framework, Sharable Content Object Reference Model, XQuery
ASJC Scopus subject areas
- Social Sciences(all)
- Education
- Social Sciences(all)
- Sociology and Political Science
- Engineering(all)
- General Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Educational Technology and Society, Vol. 7, No. 2, 04.2004, p. 51-60.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Integrating XQuery-enabled SCORM XML metadata repositories into an RDF-based E-Learning P2P network
AU - Qu, Changtao
AU - Nejdl, Wolfgang
PY - 2004/4
Y1 - 2004/4
N2 - Edutella is an RDF-based E-Learning P2P network that is aimed to accommodate heterogeneous learning resource metadata repositories in a P2P manner and further facilitate the exchange of metadata between these repositories based on RDF. Whereas Edutella provides RDF metadata repositories with a quite natural integration approach, XML metadata repositories have to overcome considerable incompatibility between XML's tree-like hierarchical data model and RDF's binary relational data model in order to be integrated into Edutella. In this paper we investigate a generic approach for integrating XML metadata repositories into Edutella in terms of an XQuery-enabled native XML database containing SCORM XML metadata. We first propose a triple-like XML-based common data view to cross incompatibility between arbitrary XML data model and RDF data model, then discuss the wrapper program implementation for XML metadata repositories based on the wrapper-like Edutella content provider integration architecture. At last, we propose a generic approach for querying complex XML data schemas in Edutella through QBE (Query by Example), and present the design of a QBE-based SCORM query GUI that can be used to query SCORM XML metadata in Edutella in the RDF syntax.
AB - Edutella is an RDF-based E-Learning P2P network that is aimed to accommodate heterogeneous learning resource metadata repositories in a P2P manner and further facilitate the exchange of metadata between these repositories based on RDF. Whereas Edutella provides RDF metadata repositories with a quite natural integration approach, XML metadata repositories have to overcome considerable incompatibility between XML's tree-like hierarchical data model and RDF's binary relational data model in order to be integrated into Edutella. In this paper we investigate a generic approach for integrating XML metadata repositories into Edutella in terms of an XQuery-enabled native XML database containing SCORM XML metadata. We first propose a triple-like XML-based common data view to cross incompatibility between arbitrary XML data model and RDF data model, then discuss the wrapper program implementation for XML metadata repositories based on the wrapper-like Edutella content provider integration architecture. At last, we propose a generic approach for querying complex XML data schemas in Edutella through QBE (Query by Example), and present the design of a QBE-based SCORM query GUI that can be used to query SCORM XML metadata in Edutella in the RDF syntax.
KW - Peer-to-Peer
KW - Query by Example
KW - Resource Description Framework
KW - Sharable Content Object Reference Model
KW - XQuery
UR - http://www.scopus.com/inward/record.url?scp=3042644269&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:3042644269
VL - 7
SP - 51
EP - 60
JO - Educational Technology and Society
JF - Educational Technology and Society
SN - 1436-4522
IS - 2
ER -