Database, transactions, tree item

[Человек_Борща]

Greetings!

I'm realize tree structure of data e.g.
Item 0
Item 1
Group 1
 - Item 1
 - Group 1
 - - Item 4

Using SQLQuery I've fill VirtualStringTree, but which way I need realize to do adding, editing items in tree using DB-controls, and not SQL queries?
e.g. before edit I query all data of item from table and fill standart non-DB controls, for update data, I'm agan make SQL query requst...

I's possible use DB-controls for add, modify items from tree?