CISCO Yang data model
Seems that configuration and operation data are defined in a different yang file though it is not clear they are module or submodule
The models are in the .yang format. A model with: -oper in the model name indicates an operational model. For example, Cisco-IOS-XR-cdp-oper.yang is an operational model for Cisco Discovery Protocol (CDP). -cfg indicates a configuration model. For example, Cisco-IOS-XR-cdp-cfg.yang is a configuration model for CDP. -act indicates a NETCONF actions model.