Data Mappings and the Metamodel
Data mappings are modeled as a model type in the metamodel (see Manage Metamodel) which includes object types: Data Mapping Folder, Classifier Map (with subtypes: Replication Mapping and Query Mapping), and Feature Map. See examples.
These new data mapping objects benefit from the same capabilities as any other custom objects including search (Metadata Query Language (MQL)), security, as well as the ability to have comments, and even operate under workflow.