Systems and methods related to the seamless integration of Content Management Interoperability Services (CMIS) client systems with native data models of repositories that may be utilized with such client systems are disclosed. In particular, certain embodiment of systems and methods for the integration of CMIS compliant client systems with CMIS compliant ECM systems by conforming CMIS secondary types utilized by CMIS clients to the native ECM artifacts utilized by the ECM system are disclosed.