newsupernova/vendor/magento/module-persistent/etc/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="persistent_session" resource="default" engine="innodb" comment="Persistent Session">
        <column xsi:type="int" name="persistent_id" padding="10" unsigned="true" nullable="false" identity="true"
                comment="Session id"/>
        <column xsi:type="varchar" name="key" nullable="false" length="50" comment="Unique cookie key"/>
        <column xsi:type="int" name="customer_id" padding="10" unsigned="true" nullable="true" identity="false"
                comment="Customer id"/>
        <column xsi:type="smallint" name="website_id" padding="5" unsigned="true" nullable="false" identity="false"
                default="0" comment="Website ID"/>
        <column xsi:type="text" name="info" nullable="true" comment="Session Data"/>
        <column xsi:type="timestamp" name="updated_at" on_update="true" nullable="false" default="CURRENT_TIMESTAMP"
                comment="Updated At"/>
        <constraint xsi:type="primary" referenceId="PRIMARY">
            <column name="persistent_id"/>
        </constraint>
        <constraint xsi:type="foreign" referenceId="PERSISTENT_SESSION_CUSTOMER_ID_CUSTOMER_ENTITY_ENTITY_ID"
                    table="persistent_session" column="customer_id" referenceTable="customer_entity"
                    referenceColumn="entity_id" onDelete="CASCADE"/>
        <constraint xsi:type="foreign" referenceId="PERSISTENT_SESSION_WEBSITE_ID_STORE_WEBSITE_WEBSITE_ID"
                    table="persistent_session" column="website_id" referenceTable="store_website"
                    referenceColumn="website_id" onDelete="CASCADE"/>
        <constraint xsi:type="unique" referenceId="PERSISTENT_SESSION_KEY">
            <column name="key"/>
        </constraint>
        <constraint xsi:type="unique" referenceId="PERSISTENT_SESSION_CUSTOMER_ID">
            <column name="customer_id"/>
        </constraint>
        <index referenceId="PERSISTENT_SESSION_UPDATED_AT" indexType="btree">
            <column name="updated_at"/>
        </index>
    </table>
    <table name="quote" resource="checkout" comment="Sales Flat Quote">
        <column xsi:type="smallint" name="is_persistent" padding="5" unsigned="true" nullable="true" identity="false"
                default="0" comment="Is Quote Persistent"/>
    </table>
</schema>