This Recommendation | International Standard defines a framework for describing and managing types of interest in ODP systems. Specifically:

it determines what entities need to be typed and what needs to be defined about the identified types;

it identifies and characterizes type languages sufficient to describe the types of interest;

it specifies a generic type repository function which can be specialized to a specific type system or type notation, and which provides for storage, retrieval and management of type descriptions and relationships between types, for naming of types in a manner consistent with the ODP naming framework, and for interworking and federation of different type repositories.