Using Relations
Relations provide metadata used primarily in building hierarchies for logical views of your system based on relationships between components. So that you can organize the display of those components in various meaningful ways.
Relations Concepts
Regardless of the actual structure of a system, you can define a hierarchy that includes “relation level definitions” which query for certain tags and relationships. Provided components are already tagged and relations already setup, executing the hierarchy definition results in a specific navigation tree hierarchy. For example, the resulting hierarchy groups all the variable air volume (VAV) controllers by the air handler units (AHUs) supplying them.
In summary, you add relations between components for purposes of building hierarchies. Optionally, adding one or more tags to a relation provides additional metadata which allows for more specific filtering when building hierarchies.
Common Relations Tasks
Common relations tasks include adding relations between one or more components. Also, you can edit existing relations.
Typical relations tasks are described in the following sections: