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Interview Q & A >> WCF >> Which specifications does WCF follow?

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Which specifications does WCF follow? (Views: 2794)


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SOA specifications..

Submitted By: pandu | Created On: 11/14/2009 6:24:08 AM

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WCF supports specifications defined by WS-* specifications. WS-* specifications are defined
together by Microsoft, IBM, SUN and many other big companies so that they can expose there
service through a common protocol. WCF supports all specifications defined we will understand
them one by one.
• Messaging (WS-Addressing):- SOAP is the fundamental protocol for web services. WS
Addressing defines some extra additions to SOAP headers, which makes SOAP free from
underlying transport protocol. One of the good things about Message transmission is MTOM,
also termed as Message Transmission Optimization Mechanism. They optimize transmission
format for SOAP messages in XML-Binary formant using XML optimized packaging (XOP).
Because the data will sent in binary and optimized format, it will give us huge performance
Security (WS-Security, WS-Trust, and WS-Secure Conversation): All the three WSdefine
authentication, security, data integrity and privacy features for a service.
Reliability (WS-Reliable Messaging): This specification ensures end-to-end
communication when we want SOAP messages to be traversed back and forth many times.
Transactions (WS-Coordination and WS-Atomic Transaction): These two specifications
enable transaction with SOAP messages.
Metadata (WS-Policy and WS-Metadata exchange): WSDL is a implementation of WSMetadata
Exchange protocol. WS-Policy defines more dynamic features of a service, which
cannot be expressed by WSDL.
WCF follows WS-* specifications other
languages like JAVA , C++ can also exploit features like Messaging , Security , Reliability and
transactions written in C# or VB.NET. This is the biggest achievement of WCF to integrate the
above features with other languages.

Submitted By: Hema | Created On: 5/10/2011 3:44:30 AM

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