Model view representation in the Historian namespace

The ArchestrA model view namespace is represented in the AVEVA Historian database as a public group namespace. Each Galaxy and object in the model view is represented as a namespace group in the database.

The top-level group reflects the name of the Galaxy. The top-level Galaxy group contains a group for every child Area and object, so that the ArchestrA object hierarchy is accurately reflected in the group/sub-group structure. Only one Galaxy can be represented in a single Historian.

Each group under the Galaxy group is named according to the object in the model view that it represents. Each group can contain:

• Additional child groups.

• Historian tagnames for the historized attributes of the object that the group represents.

• Groups that represent objects without any historized attributes, if the objects contain child objects with historized attributes or if they contain special types of objects, such as traceability objects.

The following illustrates the mapping between a sample ArchestrA model view namespace and the corresponding group namespace in the Historian: