Schema Integration between Object-Oriented Databases

There are two key motivations for this work. First, the implementation of object-oriented databases has grown to a significant number. Second, there has been a need for integrated access of information from multiple data sources. The multidatabase system has been proposed as a solution for integrated access of data from multiple distributed, heterogeneous, and autonomous database systems. To present a single database illusion to its users, a multidatabase system maintains a single global database schema, which is the integration of all component database schemas and against which its users will issue queries and updates. Many approaches to schema integration have been proposed in the literature. Most of the previous approaches are concerned with relational databases. In this paper, we propose an approach to the integration of database schemas between object-oriented databases in a multidatabase system environment. The underlying principle of our approach is to facilitate the automation of the schema integration process.