SAP Ui5 Databinding question

I am new to ui5 and still fighting with models and databinding.

I have a json array  with several entries.

Each of the entries i must bind to  an SAP.m.select and the result of the selection in the sap.m.select i must bind to an SAP.m.Input.textfield.

var selectdata = {

             "Industry" :[ "Cloud", "Aerospace & Defense", "Automotive", "Banking", "Chemicals"],

              "Y/N" : ["YES", "NON"],

              "QUARTER" : [ "Q1","Q2","Q3","Q4" ],

  };

I tried:

  var oselection_Model = new sap.ui.model.json.JSONModel();

      oselection_Model.setData(selectdata );

      sap.ui.getCore().setModel( oselection_Model, "Selection");

and then

  var opossible_Selection =  sap.ui.getCore().getModel("Selection");

  //*********************************************************************************************************

   var oUnit = new  sap.m.Select({

     id : "QACUNNP",

     width : "16rem",

   items: {   path: "/Industry/0/",

                 template: oItemTemplate

      },

   });

   var oItemTemplate = new sap.ui.core.Item({

  key: "{/Industry/0/}",

  text: "{/Industry/0/}",

  });

   oUnit.setModel(sap.ui.getCore().getModel("Selection"));

But that doesnt work. Can someone give me a hint how to bind the data to the m.select and the result of a selection in m select to another input field?

Best regards.

Dirk