What type of information is stored in Sitecore's master database?

The master database in Sitecore is primarily used for storing content items, media files, templates, and various resources that are essential for content authoring and management. This database serves as the primary location where editors and authors create, modify, and manage the content that is presented on the website.

The contents of the master database include a structured set of content items organized in a tree-like structure, allowing for easy navigation and management of the site’s content. Media items are stored here, enabling authors to upload and manage images, videos, and other media assets that contribute to the website's overall content. Additionally, templates that define the structure and layout of content items are also stored in this database, ensuring that authors have the necessary resources to create new content according to the site's design.

While user interaction data could be stored in analytics databases, system security settings would be managed in a different configuration area, and cached data would be handled by the Sitecore caching layer rather than residing directly in the master database, the significance of the master database lies in its role as the central repository for everything that authors need to create and manage content effectively.