On activation of a dataset, the dxDBTreeView loads records which have a PARENT value equal to RootValue (Locate the first record whose parent Value equals RootValue and then fetch and load the records when the values of the PARENT field are equal.

TDBTreeView is a window that displays a hierarchical list of items related to a dataset. You can directly manipulate TreeView nodes, using drag & drop and all changes will be reflected in the dataset. On changing the Value of a field related to the DBTreeView, both the label and parent property of the items are changed as well.

TdxDBTreeView object is a TreeView control that can display and edit a dataset with hierarchical structures (a self-reference dataset).

TdxDBTreePrintData is directly inherited from the TdxMemData. It retrieves the Data from a self-referenced DataSet (linked with the DataSource property) and creates the records in memory, which are sorted in specific order.