# Architecture

MariaDB Server's architecture.

{% columns %}
{% column %}
{% content-ref url="architecture/server-constraints" %}
[server-constraints](https://mariadb.com/docs/server/architecture/server-constraints)
{% endcontent-ref %}
{% endcolumn %}

{% column %}
Details the various constraints within MariaDB Server, including primary keys, unique keys, and foreign keys.
{% endcolumn %}
{% endcolumns %}

{% columns %}
{% column %}
{% content-ref url="architecture/topologies" %}
[topologies](https://mariadb.com/docs/server/architecture/topologies)
{% endcontent-ref %}
{% endcolumn %}

{% column %}
Provides information on different MariaDB Server deployment topologies, including standalone, replication, and clustered configurations.
{% endcolumn %}
{% endcolumns %}