The Online Catalog (OPA) Data Model
|What is the OPA Model?
The OPA model shows you the hierarchy or relationships between OPA descriptions and their creators. The hierarchy involves a 'parent/child' relationship between records. For example, a series can be the parent of several items and a series can also be the child of a specific collection or record group.
The relationships between archival descriptions in OPA are as follows:
Use your mouse cursor to click and learn more about each part of the OPA model.