1# Rdb_KeyInfo
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3
4## Overview
5
6Defines a struct for the primary key or row number of the row that changes.
7
8**Since**: 11
9
10**Related module**: [RDB](_r_d_b.md)
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12
13## Summary
14
15
16### Structs
17
18| Name| Description|
19| -------- | -------- |
20| [Rdb_KeyData](union_rdb___key_info_1_1_rdb___key_data.md) | Changed data.|
21
22
23### Member Variables
24
25| Name| Description|
26| -------- | -------- |
27| [count](_r_d_b.md#count) | Number of the changed primary keys or row numbers.|
28| [type](_r_d_b.md#type) | Type of the primary key. For details, see [OH_ColumnType](_r_d_b.md#oh_columntype).|
29| **data** | [Rdb_KeyInfo::Rdb_KeyData](union_rdb___key_info_1_1_rdb___key_data.md) that holds the changed data.|
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