how to sync iwth database

[Rupali]

hello,
I need to design an Building chart . I fetch data from service and that save in native database. now I design to  tree view structure . such as below
ProjectName
       BuildingA
               Wing 1
                    Floor 1
                          Activity1
                                Item1
                                Item2
                         Activity2
                    Floor2
                           Activity1
                                Item1
                                Item2
                         Activity2
                Wing 2
                Wing 3
         Building2
         Building3