<?xml version="1.0" encoding="UTF-8" ?>
<XMLDB PATH="message/output/email/db" VERSION="20190325" COMMENT="XMLDB file for Moodle message/output/email"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="../../../../lib/xmldb/xmldb.xsd"
>
  <TABLES>
    <TABLE NAME="message_email_messages" COMMENT="Keeps track of what emails to send in an email digest">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
        <FIELD NAME="useridto" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
        <FIELD NAME="conversationid" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
        <FIELD NAME="messageid" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
        <KEY NAME="useridto" TYPE="foreign" FIELDS="useridto" REFTABLE="user" REFFIELDS="id"/>
        <KEY NAME="conversationid" TYPE="foreign" FIELDS="conversationid" REFTABLE="message_conversations" REFFIELDS="id"/>
        <KEY NAME="messageid" TYPE="foreign" FIELDS="messageid" REFTABLE="messages" REFFIELDS="id"/>
      </KEYS>
    </TABLE>
  </TABLES>
</XMLDB>