[SharePoint 2013] Create event receiver for external list

Main list for creating event receiver for external list

Subscribe   storage, it could be data table in data base or even XML file.	https://msdn.microsoft.com/EN-US/library/office/jj163976.aspx
Set   trigger on business data table which will fire when data change	https://msdn.microsoft.com/EN-US/library/office/jj163976.aspx
Create   OData Service base on business data, implement subscribe/ unsubscribe in   service	https://msdn.microsoft.com/EN-US/library/office/jj163976.aspx   http://blogs.msdn.com/b/microsoft_press/archive/2013/08/26/from-the-mvps-sharepoint-2013-business-data-connectivity-odata-models-with-notification-subscriptions.aspx
Create   SharePoint add-in to consume OData Service	https://msdn.microsoft.com/en-us/library/office/jj163967.aspx
Convert   app-scoped to tenant-scoped, upload to SharePoint CA with permission, Create   external list etc.	https://msdn.microsoft.com/en-us/library/office/dn130133.aspx
Implement   subscribe/ unsubscribe functionality in SharePoint side	http://blogs.msdn.com/b/microsoft_press/archive/2013/08/26/from-the-mvps-sharepoint-2013-business-data-connectivity-odata-models-with-notification-subscriptions.aspx
Implement   event receiver on external list in SharePoint	https://msdn.microsoft.com/en-us/library/jj164024.aspx
Implement   function for sending notification to SharePoint	http://blogs.msdn.com/b/microsoft_press/archive/2013/08/26/from-the-mvps-sharepoint-2013-business-data-connectivity-odata-models-with-notification-subscriptions.aspx