Restful webservice-source

Dear All,

I have started integrate with Restful webserive (Scenario flow Resful--->PI-->Jdbc)

Restful webservice do not have any .wsdl  (or) .xsd. this webservice only delivers JSON format.

so for ex JSON format is like this:

    "Agency": "110",

    "FlightDetails": {

          "AirlineID": "LH",

          "ConnID": "0400",

          "Date": "2014-09-13"

    },

Then how I create datatype in PI side? please suggest me on this.

Thanks & Regards,

Sateesh