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XML digital signature. Asynchronous operations allow a client to invoke a service and then execute other functions.
Asynchronous clients retrieve their result at a later point in time, while synchronous clients receive their result when the service has completed. Asynchronous capability is a key factor in enabling loosely coupled systems. Web services allow clients to invoke procedures, functions, and methods on remote objects using an XML-based protocol.
Remote procedures expose input and output parameters that a web service must support. NET Components has increasingly become a part of architectures and enterprise deployments over the past couple of years.
Both technologies are distributed and accessible through a variety of RPC mechanisms. A web service supports RPC by providing services of its own, equivalent to those of a traditional component, or by translating incoming invocations into an invocation of an EJB or a. NET component. One of the key advantages of XML is its generic way of representing not only data, but also complex documents.
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