Service Oriented Architecture for Semantic Data Access Layer

This paper presents the Service Oriented Architecture (SOA)-based Semantic Data Access Layer (DAL) component approach which simplifies access to triple stores. Built with the benefits of web service and SOA, this component provides interoperability, loose coupling and programming-language independent access to different triple stores on various computer systems. Limitations of SPARQL query, SPARQL endpoint and the triples indexing mechanism as well as our solution are discussed. In this paper, particular attention is given to the performance comparison between our component and cache management, indexing facilities and native triple store vendors using the Lehigh University Benchmark (LUBM). The main contribution of our component is to provide an easy-one-stop common and reusable Application Programming Interface (API), to build high performance Semantic-based applications, without the need to develop yet another hack-end system.