newsupernova/vendor/magento/module-google-optimizer/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="googleoptimizer_code" resource="default" engine="innodb" comment="Google Experiment code">
        <column xsi:type="int" name="code_id" padding="10" unsigned="true" nullable="false" identity="true"
                comment="Google experiment code id"/>
        <column xsi:type="int" name="entity_id" padding="10" unsigned="true" nullable="false" identity="false"
                comment="Optimized entity id product id or catalog id"/>
        <column xsi:type="varchar" name="entity_type" nullable="true" length="50" comment="Optimized entity type"/>
        <column xsi:type="smallint" name="store_id" padding="5" unsigned="true" nullable="false" identity="false"
                comment="Store id"/>
        <column xsi:type="text" name="experiment_script" nullable="true" comment="Google experiment script"/>
        <constraint xsi:type="primary" referenceId="PRIMARY">
            <column name="code_id"/>
        </constraint>
        <constraint xsi:type="foreign" referenceId="GOOGLEOPTIMIZER_CODE_STORE_ID_STORE_STORE_ID" table="googleoptimizer_code"
                    column="store_id" referenceTable="store" referenceColumn="store_id" onDelete="CASCADE"/>
        <constraint xsi:type="unique" referenceId="GOOGLEOPTIMIZER_CODE_STORE_ID_ENTITY_ID_ENTITY_TYPE">
            <column name="store_id"/>
            <column name="entity_id"/>
            <column name="entity_type"/>
        </constraint>
    </table>
</schema>