Intelligent Distributed Computing VII

Abstract

Since the typical feature of a real-world application is evolution, i.e. changes in user requirements, the problem of change propagation is an important task. In this paper we study its specific part – evolution of a relational database schema and its impact on related SQL queries. The proposed approach shows an ability to model database queries together with a database schema. The feature then provides a solution how to adapt database queries related to the evolved database schema. The proposal was implemented within a complex evolution framework called DaemonX and various experiments proving the concept were carried out.