The Core Metadata microservice includes the device/sensor metadata database and APIs to expose this database to other services. In particular, the device provisioning service deposits and manages device metadata through this service's API. See Core Metadata for more details about this service.
For EdgeX 2.0 the REST API provided by the Core Metadata has changed to use DTOs (Data Transfer Objects) for all responses and for all POST/PUT/PATCH requests. All query APIs (GET) which return multiple objects, such as /all, provide
limit query parameters.