Overview

Scalability; Reliability; Performance; Heterogeneity requirements. Meta-model for distributed objects; local versus distributed objects; recognizing the differences; introduction to design changes as a result of differences. Introduction to middleware.

Middleware and the ISO/OSI reference model; middleware and operating systems; forms of middleware; analysis of a problem using middleware.

RPC, Java/RMI; Heterogenous systems. Use of meta-object model and interface definition; Java/RMI implementation; failure handling.

Assessment Strategy

-threshold -Equivalent to 40%. Uses key areas of theory or knowledge to meet the Learning Outcomes of the module. Is able to formulate an appropriate solution to accurately solve tasks and questions. Can identify individual aspects, but lacks an awareness of links between them and the wider contexts. Outputs can be understood, but lack structure and/or coherence.

-good -Equivalent to the range 60%-69%. Is able to analyse a task or problem to decide which aspects of theory and knowledge to apply. Solutions are of a workable quality, demonstrating understanding of underlying principles. Major themes can be linked appropriately but may not be able to extend this to individual aspects. Outputs are readily understood, with an appropriate structure but may lack sophistication.

-excellent -Equivalent to the range 70%+. Assemble critically evaluated, relevant areas of knowledge and theory to construct professional-level solutions to tasks and questions presented. Is able to cross-link themes and aspects to draw considered conclusions. Presents outputs in a cohesive, accurate, and efficient manner.

Learning Outcomes

• Analyse a simple distributed problem and select appropriate middleware.

• Demonstrate understanding of architectures using middleware.

• Design and construct simple distributed objects.

• Know why a meta-model and middleware may be needed for design and construction.

• Show understanding of operational requirements’ impact on distributed systems architecture.