Trading and negotiating stream bindings
IFIP/ACM International Conference on Distributed systems platforms
A CORBA-Based Distributed Multimedia Database Management Layer: Design and Implementation Aspects
ISCC '00 Proceedings of the Fifth IEEE Symposium on Computers and Communications (ISCC 2000)
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The heterogeneity of distributed multimedia systems in terms of hardware, operating systems, programming languages, data formats, compression formats, available resources, and QoS requirements imposes severe problems. The purpose of the middleware platform is to provide interoperability and portability of distributed system services and applications. However, today's middleware platforms, like CORBA and TINA-DPE, do not solve all these problems. For example, automated control of interface compatibility and Quality-of-Service (QoS) support are still important research topics. This is especially true in the context of multimedia database systems (MMDBS) in distributed systems, because interface type and QoS depends on the result of queries and cannot be determined in advance. In this paper, we show how the temporal object-oriented data model TOOMM and the formal model for bindings MBS can be utilized in a heterogeneous distributed system to (1) solve compatibility issues, (2) find agreeable levels of QoS, and (3) automatically adapt the flexible multimedia object request broker (ORB) MULTE-ORB to application requirements and available resources.