Overview of the Integration Wizard Project for Querying and Managing Semistructured Data in Heterogeneous Sources
Joachim Hammer, Charnyote Pluempitiwiriyawej · 2001
We describe the Integration Wizard (IWIZ) system for retrieving heterogeneous information from multiple data sources. IWIZ provides users with an integrated, queriable view of the information that is available in the sources without a need to know where the information is coming from and how it is accessed. Due to the popularity of the Web, we focus on sources containing semistructured data. IWIZ uses novel mediation and wrapper technologies to process multi-source queries, transform data from the native source context into the internal IWIZ model, which is based on XML, and merge the results. To improve query response time, a data warehouse is used to cache results of frequently asked queries. This paper provides an overview of the IWIZ architecture and reports on some of our experience with the prototype implementation.