Overview

A database is a system that stores data in a structured way for efficient data management and access. It centrally stores related information, supports multi-user sharing, minimizes data redundancy, and ensures data consistency and integrity. Databases are independent of applications. This makes data management more flexible and secure. A database can be seen as a digital library where you can add, retrieve, modify, and delete data efficiently.

Common databases include Oracle, SQL Server, and MySQL. All of them are relational database management systems (RDBMSs).

• Oracle: suitable for large-scale enterprise applications. It is powerful but expensive and complex to maintain.
• SQL Server: suitable for enterprise applications on a Windows platform. It is expensive, mainly supports Windows platforms, and lacks cross-platform compatibilities.
• MySQL: suitable for small- and medium-sized applications. It is lightweight and easy to use, but underperforms in large-scale data processing and high-concurrency scenarios.

To deploy MySQL databases in Linux or Window, you are advised to use RDS for MySQL. It is fully compatible with native MySQL and features high reliability, high performance, intelligent O&M, high-level security, ease of use, and auto scaling. For operation details, refer to:

• Buying a DB Instance and Connecting to It Using a MySQL Client
• Deploying MySQL on a Linux ECS
• Deploying MySQL on a Windows ECS