1# Rdb_SubscribeCallback
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4## Overview
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6Defines the callback used to return the subscribed event.
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8**Since**: 11
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10**Related module**: [RDB](_r_d_b.md)
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12
13## Summary
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16### Member Variables
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18| Name| Description|
19| -------- | -------- |
20| [detailsObserver](_r_d_b.md#detailsobserver) | Callback used to return the details about the device-cloud data change.|
21| [briefObserver](_r_d_b.md#briefobserver) | Callback used to return the device-cloud data change event.|
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