IFS Service-Oriented Component Architecture is a layered, multi-tier architecture. The Core Server section includes the core runtime and development frameworks and libraries for IFS business logic.
The Base Server documentation contains the framework for Oracle PL/SQL-based business logic. The Middle Tier documentation contains the framework for the services layer sub tier of the business logic tier. Access providers are small, client-side high-level programming libraries that contain all the functionality and APIs needed for easy access to the business logic.
Read more about domain Core Server