db_schema.xml

<?xml version="1.0"?>
<schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">

    <table name="fl32_csp_report" resource="default" engine="innodb"
           comment="CSP reports storage.">
        <column name="id" xsi:type="int" padding="10" unsigned="true" nullable="false" identity="true"
                comment="Item ID."/>
        <column name="date" xsi:type="datetime" on_update="false" nullable="false" default="CURRENT_TIMESTAMP"
                comment="Report registration date."/>
        <column name="admin_area" xsi:type="boolean" default="false" nullable="false"
                comment="Is report received in admin or storefront area?"/>
        <column name="report" xsi:type="text" nullable="false"
                comment="Report's raw data."/>
        <constraint referenceId="PRIMARY" xsi:type="primary">
            <column name="id"/>
        </constraint>
    </table>

    <table name="fl32_csp_rule" resource="default" engine="innodb"
           comment="CSP policy rules.">
        <column name="id" xsi:type="int" padding="10" unsigned="true" nullable="false" identity="true"
                comment="Rule ID."/>
        <column name="enabled" xsi:type="boolean" default="false" nullable="false"
                comment="Is policy rule enabled?"/>
        <column name="admin_area" xsi:type="boolean" default="false" nullable="false"
                comment="Is policy rule applied to admin or storefront area?"/>
        <column name="type_id" xsi:type="tinyint" unsigned="true" nullable="false"
                comment="Policy type ID."/>
        <column name="source" xsi:type="varchar" nullable="false"
                comment="Source value (schema, URL, hash, ...)."/>
        <column name="reason" xsi:type="varchar" nullable="true"
                comment="Reason for enabled/disabled rule"/>
        <constraint referenceId="PRIMARY" xsi:type="primary">
            <column name="id"/>
        </constraint>
        <constraint referenceId="UQ_RULE" xsi:type="unique">
            <column name="admin_area"/>
            <column name="type_id"/>
            <column name="source"/>
        </constraint>
        <constraint referenceId="FK_TYPE_KEY" xsi:type="foreign"
                    table="fl32_csp_rule" referenceTable="fl32_csp_type_policy"
                    column="type_id" referenceColumn="id" onDelete="CASCADE"/>
    </table>

    <table name="fl32_csp_type_policy" resource="default" engine="innodb"
           comment="Policy type (script-src, style-src, ...).">
        <column name="id" xsi:type="tinyint" unsigned="true" nullable="false" identity="true"
                comment="Policy type ID."/>
        <column name="key" xsi:type="varchar" nullable="false"
                comment="Type value."/>
        <constraint referenceId="PRIMARY" xsi:type="primary">
            <column name="id"/>
        </constraint>
        <constraint referenceId="UQ_TYPE_KEY" xsi:type="unique">
            <column name="key"/>
        </constraint>
    </table>

    <table name="fl32_csp_rule_sent" resource="default" engine="innodb"
           comment="Table storing email-reported rules persistently">
        <column xsi:type="smallint" name="csp_rule_sent_id" padding="6" unsigned="true" nullable="false"
                identity="true" comment="Entity Id"/>
        <column name="csp_rule_id" xsi:type="int" padding="10" unsigned="true" nullable="false" identity="false"/>
        <column name="csp_rule_sent_to" nullable="true" xsi:type="text"/>
        <constraint xsi:type="primary" referenceId="PRIMARY">
            <column name="csp_rule_sent_id"/>
        </constraint>
        <constraint xsi:type="foreign" referenceId="FK_FL32_CSP_RULE_ID"
                    column="csp_rule_id" table="fl32_csp_rule_sent"
                    referenceTable="fl32_csp_rule" referenceColumn="id" onDelete="CASCADE"/>
    </table>

</schema>