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   1  <?xml version="1.0" encoding="UTF-8" ?>
   2  <XMLDB PATH="mod/quiz/report/statistics/db" VERSION="20130920" COMMENT="XMLDB file for Moodle mod/quiz/report/statistics"
   3      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   4      xsi:noNamespaceSchemaLocation="../../../../../lib/xmldb/xmldb.xsd"
   5  >
   6    <TABLES>
   7      <TABLE NAME="quiz_statistics" COMMENT="table to cache results from analysis done in statistics report for quizzes.">
   8        <FIELDS>
   9          <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
  10          <FIELD NAME="hashcode" TYPE="char" LENGTH="40" NOTNULL="true" SEQUENCE="false" COMMENT="sha1 hash of serialized qubaids_condition class. Unique for every combination of class name and property."/>
  11          <FIELD NAME="whichattempts" TYPE="int" LENGTH="4" NOTNULL="true" SEQUENCE="false" COMMENT="bool used to indicate whether these stats are for all attempts or just for the first."/>
  12          <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
  13          <FIELD NAME="firstattemptscount" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
  14          <FIELD NAME="highestattemptscount" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
  15          <FIELD NAME="lastattemptscount" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
  16          <FIELD NAME="allattemptscount" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false"/>
  17          <FIELD NAME="firstattemptsavg" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  18          <FIELD NAME="highestattemptsavg" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  19          <FIELD NAME="lastattemptsavg" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  20          <FIELD NAME="allattemptsavg" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  21          <FIELD NAME="median" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  22          <FIELD NAME="standarddeviation" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  23          <FIELD NAME="skewness" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="10"/>
  24          <FIELD NAME="kurtosis" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="5"/>
  25          <FIELD NAME="cic" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="10"/>
  26          <FIELD NAME="errorratio" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="10"/>
  27          <FIELD NAME="standarderror" TYPE="number" LENGTH="15" NOTNULL="false" SEQUENCE="false" DECIMALS="10"/>
  28        </FIELDS>
  29        <KEYS>
  30          <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
  31        </KEYS>
  32      </TABLE>
  33    </TABLES>
  34  </XMLDB>