The DataStoreChangeEvent interface of the Data Store API represents the event related to a record changed in the data store, i.e. this is returned once a change is made and the change event is fired (see DataStore.onchange for the handler).
The id read-only property of the DataStoreChangeEvent interface returns the identifier of the changed record in the data store. This must return null if the operation is cleared.
The operation read-only property of the DataStoreChangeEvent interface returns the type of operation that represents the current change that has been made to the data store.
The owner read-only property of the DataStoreChangeEvent interface returns the manifest URL of the application that made the change to the data store.
The revisionId read-only property of the DataStoreChangeEvent interface returns the ID of the current revision of the data store, i.e. the current change that has been made to a data record.