soa AR 4 q&&A

A: corba and dcom. seems like "dist obj" architecture"

A: Traditionally, connections between applications have been tightly coupled, as with CORBA (Common Object Request Broker Architecture). For example, flipping a wall switch to turn on a light is a tightly coupled system. However, making a telephone call to order a book is a loosely coupled system.

A: provider, consumer and a broker, just like JMS. Broker can also be a registry.
provider would PUBLISH its list of services to the registry

A: a Web service is little more than an SOA. However, an SOA doesn't require the use of Web services as we understand them, and some types of Web services can be deployed without an SOA.

Simple SOA block diagram http://www.computerworld.com/computerworld/records/images/story/HowSOAWorks_large.gif

Q: 3 basic roles (processes) for an SOA interaction?

Q: relation to web corba?

Q: relation to web services?

Q: similiar ideas to SOA?