A CDN server is a server used to accelerate the distribution of website content. If you need to store certain data or configure content caching on the CDN server, you can integrate the database into your application and then distribute the cached content to the CDN.

　　The following are the general steps to integrate a database on a CDN server:

　　Select and configure a server: First, you need to choose a CDN provider that suits your needs and follow the guidelines provided by them to set up a CDN server. This usually involves configuring DNS records so that your website or application's content is distributed through the CDN.

　　Build a database server: In your application, you need to build and configure a database server to store and manage data. Common databases include MySQL, PostgreSQL, MongoDB, etc. The specific choice depends on your application needs.

　　Configuring the application: Your application needs to communicate with the database to retrieve and store data. This usually involves configuring the database connection string and using a database driver. Make sure your application can connect to and operate the database correctly.

　　Content caching: If you want to serve static content or cache dynamic content through a CDN, you can use caching policies to set up the CDN. This can reduce the load on the database server and improve performance.

　　CDN cache settings: Configure the CDN to ensure your content is cached and distributed correctly. This typically includes setting caching rules, cache times, and cache refresh policies.

　　Testing and Optimization: After integrating the application and database into the CDN, perform testing to ensure everything is running properly. Optimize your configuration for best performance.

　　Please note that the main purpose of a CDN server is to improve website performance and availability by distributing content to edge nodes around the world. Database servers are usually located in data centers and are used to store and manage data. When building and configuring your application, be sure to integrate your database and CDN for optimal performance and user experience.