# Information Schema KEY\_PERIOD\_USAGE Table

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This table is available as of MariaDB 11.4.
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The [Information Schema](https://mariadb.com/docs/server/reference/system-tables/information-schema) `KEY_PERIOD_USAGE` table shows information about [Application-Time Periods](https://mariadb.com/docs/server/reference/sql-structure/temporal-tables/application-time-periods).

It contains the following columns:

| Column              | Description |
| ------------------- | ----------- |
| CONSTRAINT\_CATALOG |             |
| CONSTRAINT\_SCHEMA  |             |
| CONSTRAINT\_NAME    |             |
| TABLE\_CATALOG      |             |
| TABLE\_SCHEMA       |             |
| TABLE\_NAME         |             |
| PERIOD\_NAME        |             |

## Example

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

{% @marketo/form formId="4316" %}