db_schema.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
    <table name="sitemap" resource="default" engine="innodb" comment="XML Sitemap">
        <column xsi:type="int" name="sitemap_id" padding="10" unsigned="true" nullable="false" identity="true"
                comment="Sitemap Id"/>
        <column xsi:type="varchar" name="sitemap_type" nullable="true" length="32" comment="Sitemap Type"/>
        <column xsi:type="varchar" name="sitemap_filename" nullable="true" length="32" comment="Sitemap Filename"/>
        <column xsi:type="varchar" name="sitemap_path" nullable="true" length="255" comment="Sitemap Path"/>
        <column xsi:type="timestamp" name="sitemap_time" on_update="false" nullable="true" comment="Sitemap Time"/>
        <column xsi:type="smallint" name="store_id" padding="5" unsigned="true" nullable="false" identity="false"
                default="0" comment="Store id"/>
        <constraint xsi:type="primary" referenceId="PRIMARY">
            <column name="sitemap_id"/>
        </constraint>
        <constraint xsi:type="foreign" referenceId="SITEMAP_STORE_ID_STORE_STORE_ID" table="sitemap" column="store_id"
                    referenceTable="store" referenceColumn="store_id" onDelete="CASCADE"/>
        <index referenceId="SITEMAP_STORE_ID" indexType="btree">
            <column name="store_id"/>
        </index>
    </table>
</schema>