> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/architecture.md).

# Architecture

MariaDB Server's architecture.

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[Server Constraints](/docs/server/architecture/server-constraints.md)
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Details the various constraints within MariaDB Server, including primary keys, unique keys, and foreign keys.
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[Topologies](/docs/server/architecture/topologies.md)
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Provides information on different MariaDB Server deployment topologies, including standalone, replication, and clustered configurations.
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