Node operation (UPDM - MODAF aliases)
Creation
To create a Node Operation:
• From a Node or Security Domain: right-click the Node or Security Domain, point to New, point to MODAF, and then click Node Operation. On the Select Realizes dialog, select the realized Operational Activity or Standard Operational Activity.
• From an OV-2 Operational Node Definition: click the Node Operation button, and then click in free space on the diagram. On the Select Realizes dialog, select the realized Operational Activity or Standard Operational Activity.
Node Operation button, and then click in free space on the diagram. On the Select Realizes dialog, select the realized Operational Activity or Standard Operational Activity.• From an OV-6c Operational Event-Trace Description:
◦ Click the 
Node Operation Message button, in line with the required Statement click the source lifeline, and then click the destination lifeline. The destination lifeline must be a Node Role or Problem Domain.
Node Operation Message button, in line with the required Statement click the source lifeline, and then click the destination lifeline. The destination lifeline must be a Node Role or Problem Domain.◦ Click the 
Node Operation Reply Message button, in line with the required Statement click the source lifeline, and then click the destination lifeline. The source lifeline must be a Node Role or Problem Domain.
Node Operation Reply Message button, in line with the required Statement click the source lifeline, and then click the destination lifeline. The source lifeline must be a Node Role or Problem Domain.When you create a Node Operation message, you are prompted to create or select the Node Operation that represents the Operational Activity or Standard Operational Activity you want to show on the OV-6c Operational Event-Trace Description.
Appearance
When shown on an OV-2 Operational Node Definition, a Node Operation appears as follows:
When shown on an OV-6b Operational State Transition Description, a Node Operation appears as a Do Node Operation call:
When shown on an OV-6c Operational Event-Trace Description, a Node Operation appears as a Node Operation message:
Relationships
The following relationships are of importance to a Node Operation:
• A Node Operation Action can invoke a Node Operation.
The following sections provide information about how a Node Operation is used in the model.
Create a Node Operation from
Create from a Node Operation
In addition to the UPDM elements that can be created from all UPDM elements (Alias, Definition, Information and Metadata):
Shown on these diagrams, tables and matrices
In addition to the AV-2 Integrated Dictionary and TV-1 Standards Profile, which can show all UPDM elements:
OV-6c Operational Event-Trace Description (as a Do Node Operation)UPDM writable properties
The following writeable properties are available on the Node Operation tab of a Node Operation element's Property Pages:
• URI