## 1. API Description
This API (InquiryCdbUpgradePrice) is used to query the upgrade price of Cloud Database instances. Instance types include master instance, disaster recovery instance and read-only instance.
Domain for API request:
cdb.api.qcloud.com
## 2. Input Parameters
The following request parameter list only provides API request parameters. Common request parameters need to be added when the API is called. For more information, refer to
Common Request Parameters. The Action field for this API is InquiryCdbUpgradePrice.
| Parameter Name | Required | Type | Description |
|---------|---------|---------|---------|
| cdbInstanceId | Yes | String | Instance ID, such as: cdb-c1nl9rpv. It is identical to the instance ID displayed in the Cloud Database console page and can be obtained using API [Query List of Instances](/doc/api/253/1266). Its value equals to the uInstanceId field value in the output parameter. |
| memory | Yes | Int | Memory size after upg
