# Rdb_ProgressObserver ## Overview Defines a struct for the observer for the device-cloud sync progress. **Since**: 11 **Related module**: [RDB](capi-rdb.md) **Header file**: [relational_store.h](capi-relational-store-h.md) ## Summary ### Member Variables | Name | Description | | ------------------------------------------------------------ | ------------------------------ | | void* context | Context of the device-cloud sync progress observer. | | [Rdb_ProgressCallback](capi-relational-store-h.md#rdb_progresscallback) callback | Callback used to return the device-cloud sync progress.|