Question

what are limitations of following technologies XML ,SOA,SOAP and JAXB

Answer 1

Answer:

soa

Explanation:

We can either provide a language mechanism that hides the local/remote nature of a resource or we treat it programmatically i.e. the programmer is aware of the difference. • If we provide a language mechanism for abstracting out the differences then ALL pointer usage must follow the distributed rationale. The language must not be allowed to provide address-space relative pointers otherwise we are back to the local/remote arguments. This tends to exclude languages such as C/C++ etc. from being able to support such a language extension.

14. Partial Failure.• This has been described as the central reality of distributed computing see [Waldo]. The issues boil down to the inability of some agent to adequately identify what components have failed and reliably inform other components of that failure. There is no global state that can be examined to determine the nature of the failure, be that network or remote processor. To be able to ensure a consistent state is maintained in the presence of failures distributed applications must deal with indeterminacy, that is components must be designed to react correctly to the various possible partial failures that can occur. Concurrency.• Objects involved in providing services across a network to multiple clients must be able to handle concurrent method invocations. Thus if we strive for the one model view all objects in our application must have adequate concurrency semantics. There are subtle differences between multi-threaded applications where the threading model can to some extent be controlled and a true distributed object where the threading model is unknown.

15. The Semantics problem Tools – the world of services, the picture depicts a hammer .. But what makes it a hammer ?? Context and Environment – we possess an understanding of hammering – that is how to use a hammer Context andContext and Environment underpins our view of services through the Environmentnotion of suitability.However our view of services underlies Context and Environment Intelligibility Suitabilitythrough the notion of intelligibility Tools Reflex Hammer – used in medicine !!