Data Nodes in the TIS Editor can reference one another in two ways.
- By having a Parent Node
- By using another data node in an operation (Referenced Node)
Changes in the parent node or referenced node out-date the result table of the child node(s). Child nodes are then marked out-of-date with the symbol
. They are not automatically updated.When a data node is opened, per default the data node an all of its ancestors that are out-of-date are updated automatically.
This behavior can be changed by setting the data node to manual. Then the data node is only recalculated when the recalculate-button is clicked.
The dependencies cannot be circular. Hence, the dependencies result in a directed, acyclic graph. The following figure outlines the behavior of dependent nodes.