Parcial 3 Flashcards
This provides a service interface enabling clients to interact with servers in a more general way than web browsers do
Web Service
This specifies the rules for using XML to package messages for examples to support a request-reply protocol
The SOAP protocol
This works as an addition to web servers is based on the ability to use an HTTP request to cause the excecution of a program
The provision of web services
this is a textual representation that, although more bulky than alternative representations, has been adopted for its readability and the consequent ease of debugging
XML
This generally consist of a collection of operations that can be used by a client over the internet
Web Service Interface
The operations in a web service may be provided by a variety of different resources, for example
Programs, objects or databases
They acces the operations in the interface of a web service by means of request and replies formatted in XML and usually transmitted over HTTP
Clients
This refers to minimizing the dependencies between services in order to have a flexible underlying architecture (reducing the risk that a change in one service will have a knock-on effect on the other services)
Loose coupling
The acces point of a web service with a ____ can depend on context and can change from time to time, its current ____ can be obtained from a ____ lookup service
URN, URL, URN
This is designed to enable both client-server and asynchronous interaction over the internet
SOAP
This is an alternative approach wich uses its own service description to deal with the server-specific characteristcs of the messages it receives
REST
This is carried in an ‘envelope’. Inside the envelope there is an optional header and a body
SOAP Message
The key characteristics of most web services that they can process
XML formatted SOAP messages
This is a persistent refrence, meaning that it will continue to refer to the service for as long as the server the URL points to exist
URL
