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DartGrid Linked Data Mapper Mapper Linked Data A Browser rowser- -based Semantic Mapping based Semantic Mapping Tool for Linked Data in Semantic Web Tool for Linked Data in Semantic Web Chunying Zhou Chengli Xu, Huajun Chen,

DartGrid Linked Data Mapper Mapper – – Linked Data A Browser rowser- -based Semantic Mapping based Semantic Mapping Tool for Linked Data in Semantic Web Tool for Linked Data in Semantic Web Chunying Zhou ， Chengli Xu, Huajun Chen, Kingsley Idehen
DartGrid Contents Introduction 3 1 Architecture of Linked Data Mapper 2 Functionalities & Technical Features 3 Practical Demonstration 4
DartGrid Linked Data Mapper 1. Introduction
DartGrid Why need Linked Data Mapper? Linked Data (database, XML, RDF 1. 1. triples) on the web are often isolated and heterogeneous with each other. Ontology-based Data Integration 2 2 needs semantic mappings from data schema to ontology schema Defining semantic mapping 3 3 manually is a burdensome and error- prone work.
DartGrid Goals of our Mapper? � To provide easy-to-use functionalities to help users to define mappings from relational databases to ontology schema. (Now) � To provide functionalities of converting relational data to RDF data automatically based on the mappings or not. (Now) � To serve as a universal mapping space, in which semantic mappings can be shared, reused, and exchanged. (Future)
DartGrid Linked Data Mapper Architecture & Features
DartGrid Architecture � Visualized mapping tool: Browser-based Mapping Tool provides functionalities to for Linked Data define semantic mappings by drag-and-drop Ontology Other Data File Resource Resource Resource Management Viewer Management Registery � Resource interaction server: is in charge of interaction with databases and ontology schemas. RDF componet Ajax Database Connection Http/WebDAV component of OAT of OAT � Physical resource: relational databases and ontology shemas (RDFS, .n3, XML……) Virtuoso Universal Server Physical Databases
DartGrid Functional components Display databases and ontology schema (supporting RDF graph) Linked Data Linked Data Define semantic mappings from databases to shared ontology Mapper Mapper Transform graphical mappings to Mata schema language executed to convert relational data to RDF data
DartGrid Technical Features Drag-and-drop mapping Web browser-based tool Linked Data Linked Data Linked Data Visualization mapping Mapper Mapper Mapper Data source annotation Data Transformation SQL to RDF
DartGrid Demo Video Demo Video

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