The scope of ISO 15926 is "Integration of life-cycle data for process plants, including oil and gas production facilities".

Data integration means combining information derived from several independent sources into one coherent set of data that represents what is known. Because the independent sources often have overlapping scopes, combining their data requires the common things to be recognized, duplicate information to be removed, and new information represented. To succeed in the role of integration, the data model must have a context that can include all the possible data that might be wanted or required.