> 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/reference/system-tables/information-schema.md).

# Information Schema

The `information_schema` is a standard-compliant database available in every MariaDB instance, providing metadata about all other databases, tables, columns, and server-level objects.

{% columns %}
{% column %}
{% content-ref url="/pages/CvuZcJ4Tx283ddjPkoEj" %}
[Information Schema Tables](/docs/server/reference/system-tables/information-schema/information-schema-tables.md)
{% endcontent-ref %}
{% endcolumn %}

{% column %}
Provides a comprehensive list of all tables available within the `information_schema`, including their purpose and the metadata they provide.
{% endcolumn %}
{% endcolumns %}

{% columns %}
{% column %}
{% content-ref url="/pages/8J3NQ1UreSSlst2Hgks3" %}
[TIME\_MS column in INFORMATION\_SCHEMA.PROCESSLIST](/docs/server/reference/system-tables/information-schema/time_ms-column-in-information_schemaprocesslist.md)
{% endcontent-ref %}
{% endcolumn %}

{% column %}
Details the `TIME_MS` column in the `INFORMATION_SCHEMA.PROCESSLIST` table, which provides high-resolution timing for active server processes.
{% endcolumn %}
{% endcolumns %}