The TOSCA meta-model defines abstractions that are fully aligned with its mission to define models as well as resources in a standard way, GIN has leveraged this fact to create a model catalog database whose schema is defined in terms of the TOSCA entities. This provides a big advantage of saving all kinds of models and resources without having to change the schema. It overcomes a big deficiency of ONAP, where AAI schema has to be changed frequently to accommodate new resources that do not fit the current schema. CCI has chosen Dgraph as the graph database of its choice. It is a distributed graph database with a query language that is closely patterned after the standard GraphQL. The service model catalog includes models for services, virtual functions, resources, networks, infrastructure, analytics, policies, etc.
