Distributed Mediation Using a Light-Weight OODBMS

An overview is given of a light weight Object Oriented OO multi database system named AMOS II Object Oriented multi database queries and views can be de ned where external data sources of di erent kinds are translated through AMOS II and integrated through its OOmediation primitives Through its multi database facilities many distributed AMOS II systems can inter operate Since most data reside in the data sources and to achieve good performance the system is designed as a main memory DBMS having a stor age manager query optimizer transactions client server interface etc The AMOS II data manager is optimized for main memory and is extensible so that new data types and query operators can be added or implemented in some external programming language Such extensibility is essential for data integration