Towards efficient and scalable mediation: the AURORA approach
Ling Ling Yan · 1997
We develop a 2-tier, plug-and-play mediation model for accessing a large number of heterogeneous data sources. This model defines a divide-and-conquer approach towards information integration. It is more suitable for applications such as electronic commerce than existing models. We also develop algebras that manipulate heterogeneous data, the mediation enabling algebras, that provide new techniques for efficient query processing in large-scale middleware. This paper presents the mediation model, architecture and techniques studied in the AURORA project. 1 Introduction Today, a vast amount of digital information is provided by sources ranging from database systems, WWW pages, file systems and spreadsheets, to special-purpose data repositories. With the advent of the Internet, the way people use information is changing rapidly. In general, software that facilitates access to multiple heterogeneous information sources is needed. Such software is commonly known as a middleware. Accessing...