Chapter 29. Middleware
29.1 Middleware paradigms
29.2 Java middleware
29.3 OMG and OMA
29.4 CORBA
29.5 ODMG
29.6 COM, DCOM and .NET
29.7 Message-oriented middleware (MOM)
29.8 Summary
Middleware was defined briefly in Section 2.8 as a layer of software that presents a uniform environment to the components of a distributed system. The middleware hides, or abstracts, any hetereogeneity in the underlying operating systems and communications services, as shown in Figure 2.19. As we saw in Chapter 7, all distributed systems need a naming scheme for their components, and services which map names to locations so that components can interwork, by making use of communications services. Chapter 16 started from same-machine inter-process communication and discussed ...
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