The deletion should be cared in two different ways:

• Links: should be deleted as soon as asked.

• Nodes: nodes shouldn't be deleted physically in a first moment, just move its type to a higher level in type hierarchy

At end of all bundle executions we can execute a Garbage Collector that will remove the unnused Nodes based on the following simple rule: The node to be deleted should have the type on higher level and should not have links associated with it.