API Overview

GeminiDB provides extended APIs. These APIs enable you to use some functions of GeminiDB.

**Table 1** API description
Type	Description
API Version Queries	Query API versions. Query version information of a specific API.
DB Version Queries	Query version information of a specified type of instances.
Instance Specifications Queries	Query all instance specifications under a specified condition.
Instance Management	Create, delete, and query instances, scale up or down the instance storage space, add or delete cluster instance nodes, change instance specifications, and change the instance administrator password, instance name, and instance security group.
Backup and Restoration	Query and set automated backup policies.
Parameter Management	Obtain parameter templates, create a parameter template, modify parameters in a parameter template, apply a parameter template, modify or obtain parameters of a specified instance, obtain parameters of a specified parameter template, and delete a parameter template.
Tag Management	Query resources by tag, batch add and delete tags, and query resource tags.
Quota Management	Query quotas.
Disaster Recovery (DR) Management	Checking whether a DR relationship can be created for one instance with a specified one or deleted, creating a DR relationship between one instance and a specified instance, and deleting a DR relationship between two them.