The VIRTUOSE Distributed Object Store

Object-Oriented Database Management Systems break up into two components. The object manager deals with the management of logical objects and relies on the object store which implements system and transaction related features and manages physical objects. The efficiency of the object store strongly depends on the way memory and distribution management aspects are considered. Such aspects include addressing, concurrency control management, distribution management and cache management. The Arias distributed-shared-memory system characteristics provides an interesting framework for those aspects and for building an efficient scalable applications. This papers shows how we used the Arias system for designing and implementing the VIRTUOSE distributed object store. VIRTUOSE provides the same interface than O2Store (the O2 system’s object store) making it usable by concrete existing O2 applications.