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Help Center/ GaussDB/ API Reference/ Before You Start

Before You Start

Updated on 2024-12-27 GMT+08:00

GaussDB is a distributed relational database developed by Huawei. GaussDB supports distributed transactions and intra-city deployment across AZs for zero data loss, storage for petabytes of data, and scale-out to more than 1,000 nodes. It is highly available, secure, and scalable and provides services including quick deployment, backup, restoration, monitoring, and alarm reporting for enterprises.

This document describes how to use application programming interfaces (APIs) to perform operations on instances, such as creating, deleting, querying and scaling out instances. For operation details, see API Overview.

If you plan to access GaussDB through an API, ensure that you are familiar with GaussDB concepts. For details, see Service Overview.

Endpoints

An endpoint is the request address for calling an API. Endpoints vary depending on services and regions. For the GaussDB endpoints, see Regions and Endpoints.

Concepts

  • Account

    An account is created upon successful registration. The account has full access permissions for all of its cloud services and resources. It can be used to reset user passwords and grant user permissions. The account is a payment entity, which should not be used directly to perform routine management. For security purposes, create Identity and Access Management (IAM) users and grant them permissions for routine management.

  • User

    A user is created using an account to use cloud services. Each user has its own identity credentials (password and access keys).

    The account name, username, and password will be required for API authentication.

  • Region

    A region is a geographic area in which cloud resources are deployed. Availability zones (AZs) in the same region can communicate with each other over an intranet, while AZs in different regions are isolated from each other. Deploying cloud resources in different regions can better suit certain user requirements or comply with local laws or regulations.

  • AZ

    An AZ contains one or more physical data centers. Each AZ has independent cooling, fire extinguishing, moisture-proof, and electricity facilities. Within an AZ, computing, network, storage, and other resources are logically divided into multiple clusters. AZs within a region are interconnected using high-speed optical fibers to support cross-AZ high-availability systems.

  • Project

    Projects group and isolate compute, storage, and network resources across physical regions. A default project is provided for each region, and subprojects can be created under each default project. Users can be granted permissions to access all resources in a specific project. For more refined access control, create subprojects under a project and purchase resources in the subprojects. Users can then be assigned permissions to access only specific resources in the subprojects.

    Figure 1 Project isolating model

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