NeTEx Xml is an XML representation of the Transmodel Public Transport Data model that can be used to exchange data objects between netex databases and other services.
.SIRI is a European CEN technical standard for the exchange of real time information.
SIRI is defined by XML schemas and comprises a general protocol for communication, and a modular set of functional services
SIRI supports both direct request/response and publish subscribe patterns of interaction.
SIRI includes common mechanisms and messages for system status management.
SIRI documents can be exchanged using http post, and/or SOAP.