Thank you very much for the reply.
I have gone through the link you have shared. But really is it possible to implement the model like below qml code consider the model is developed in cpp side with reference to above cpp classes Sytem, SytemDatabase and CoresData.

Qt Code: 
  1. Repeater {
  2.                 id: repeaterRootSystem
  3.                 model: SytemTree
  4.                 delegate: customRectangle {---
  5. 					visible: systemAvailable
  6. 					value: systemNumber
  7. 					----
  8. 					Repeater {
  9. 						id: repeaterDatabase
  10. 						model: SytemTree.get(index).SytemDatabase
  11. 						delegate: customRectangle {---
  12. 							visible: databaseVisible
  13. 							value: databaseNumber
  14. 							---
  15. 							Repeater {
  16. 								id: repeaterCoresData
  17. 								model: SytemTree.get(index).SytemDatabase.get(index).CoresData
  18. 								delegate: customRectangle {--
  19. 									visible: coreAvailable
  20. 									value: coreNumber
  21. 									speed: coreSpeed
  22. 									----
  23. 								}
  24. 							}
  25. 						}
  26. 					}
  27. 				}
  28. 			}
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