<?xml version="1.0" encoding="UTF-8" ?>
<XMLDB PATH="mod/quiz/report/overview/db" VERSION="20180319" COMMENT="XMLDB file for Moodle mod/quiz/report/overview"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="../../../../../lib/xmldb/xmldb.xsd"
>
  <TABLES>
    <TABLE NAME="quiz_overview_regrades" COMMENT="This table records which question attempts need regrading and the grade they will be regraded to.">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
        <FIELD NAME="questionusageid" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Foreign key references question_usages.id, or equivalently quiz_attempt.uniqueid."/>
        <FIELD NAME="slot" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Foreign key, references question_attempts.slot"/>
        <FIELD NAME="newfraction" TYPE="number" LENGTH="12" NOTNULL="false" SEQUENCE="false" DECIMALS="7" COMMENT="The new fraction for this question_attempt after regrading."/>
        <FIELD NAME="oldfraction" TYPE="number" LENGTH="12" NOTNULL="false" SEQUENCE="false" DECIMALS="7" COMMENT="The previous fraction for this question_attempt."/>
        <FIELD NAME="regraded" TYPE="int" LENGTH="4" NOTNULL="true" SEQUENCE="false" COMMENT="set to 0 if element has just been regraded. Set to 1 if element has been marked as needing regrading."/>
        <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Timestamp of when this row was last modified."/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
        <KEY NAME="questionusageid-slot" TYPE="foreign" FIELDS="questionusageid, slot" REFTABLE="question_attempts" REFFIELDS="questionusageid, slot"/>
      </KEYS>
    </TABLE>
  </TABLES>
</XMLDB>