Controlling dynamic object transfer between distributed repositories

Abstract

An approach to control the dynamic object transfer between distributed repositories is presented. The author introduces a declarative notation to specify the structure of a distributed repository environment. A complementary notation is offered to specify event-based sending and receiving of data objects via port links. The notation allows for detailed specification of trigger events, of data object selection of transfer destination selection, and of several options to control transfer management at runtime. The approach supports a strict decoupling of local data processing and of distributed data exchange. In addition, it makes a decentralized model of data storage possible, as opposed to the more costly model of ubiquity provided by distributed databases. The practical use of the approach is illustrated by examples.<>