8-1: Basic of Service-oriented Architectures (SoA)
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8-1: Basic of Service-oriented Architectures
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8-1: Basic Of Service-oriented Architectures
What is Service-oriented Architecture about? - answer-It is about distributed objects - objects that live on different machines
How is an interface defined in SOA? - answer-An interface is defined in terms of functionality and protocols
**endpoint** is service
What is the big idea of how S...
8-1: Basic of Service-oriented Architectures (SoA)
What is Service-oriented Architecture about? - answer-It is about distributed objects - objects that live
on different machines
How is an interface defined in SOA? - answer-An interface is defined in terms of functionality and
protocols
**endpoint** is service
What is the big idea of how SOA works? - answer-It requires lose coupling of services.
It separates functionality into small units in order t allow users to combine and reuse them in apps
without changing.
What design pattern SOA is similar to? - answer-Mediator pattern in terms of separation of concerns,
and also layers.
How do SOA developers relate individual SOA objects? - answer-By orchestration (Su phoi hop)
What is orchestration in SOA development? - answer-Uses XML to structure and exchange data.
WSDL to describe services (i.e. exported methods)
SOAP protocol describes communition protocols
What design pattern that is similar to services that wrap legacy apps and present them as services? -
answer-Adapter design pattern
, What is CORBA? - answer-Common Object Request Broker Architecture
What is DCOM - answer-Distributed Component Object Model
Difference between components and objects? - answer-Components can be written in any language,
including non-OO languages, as long as they conform to design & naming standards that are part of
distributed object/component technology.
What are the advantages of SOA? - answer-1st significant attempt by industry to promote interface-
centric programming
Platform independence
Language independence
Location independence
What are the disadvantages of SOA? - answer-Slow
Middleware abstractions were underspecified
Incompatible standards
CORBA & DCOM are...
Basic idea of Distributed Objects? - answer-Server = Singleton Factory class.
Static methods = instances creators for service classes.
When you connect to a server, you can create an instance of some service class.
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