Web Service Choreography Interface (WSCI) 1.0

http://www.w3.org/TR/wsci/

when used in a collaboration context, the objective of WSCI is to present the interface that a given Web Service exhibits in such a complex scenario, when it acts as one more more roles.

Each Web Service is considered a peer in the collaboration and, as such, exhibits its own interface as part of the collaboration.

Layer one-->Modelling Layers: Process/Collaboration definition
Layer two-->WSCI: Dynamic, Choreographed Web Service Interface
Layer three-->WSDL: Static Web Service Interface

WSCI: Activity:-Activity/Action
WSDL: Operation Type(portType):-Operation:-Input/output:-Message

WSDL operations are building blocks in WSCI Actions. WSCI Actions operate on WSDL operations.

Four types of WSDL operations

One-way: can receive a message but will not return a response

Request-response: can receive a message and will return a response

Solicit-response: can send a message and will wait for a response

Notification: can send a message and will not wait for a response