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<?xml version="1.0" encoding="UTF-8" ?>
<XMLDB PATH="mod/quiz/db" VERSION="20060920" COMMENT="XMLDB file for Moodle mod/quiz"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="../../../lib/xmldb/xmldb.xsd"
>
  <TABLES>
    <TABLE NAME="question_categories" COMMENT="Categories are for grouping questions" NEXT="question">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="course"/>
        <FIELD NAME="course" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="name"/>
        <FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="course" NEXT="info"/>
        <FIELD NAME="info" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="name" NEXT="publish"/>
        <FIELD NAME="publish" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="info" NEXT="stamp"/>
        <FIELD NAME="stamp" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="publish" NEXT="parent"/>
        <FIELD NAME="parent" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="stamp" NEXT="sortorder"/>
        <FIELD NAME="sortorder" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="999" SEQUENCE="false" ENUM="false" PREVIOUS="parent"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_categories" NEXT="parent"/>
        <KEY NAME="parent" TYPE="foreign" FIELDS="parent" REFTABLE="question_categories" REFFIELDS="id" COMMENT="note that to make this recursive FK working someday, the parent field must be declared NULL" PREVIOUS="primary"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="course" UNIQUE="false" FIELDS="course"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="question" COMMENT="The questions themselves" PREVIOUS="question_categories" NEXT="question_answers">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="category"/>
        <FIELD NAME="category" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="parent"/>
        <FIELD NAME="parent" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="category" NEXT="name"/>
        <FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="parent" NEXT="questiontext"/>
        <FIELD NAME="questiontext" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="name" NEXT="questiontextformat"/>
        <FIELD NAME="questiontextformat" TYPE="int" LENGTH="2" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="questiontext" NEXT="image"/>
        <FIELD NAME="image" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="questiontextformat" NEXT="generalfeedback"/>
        <FIELD NAME="generalfeedback" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" COMMENT="to store the question feedback" PREVIOUS="image" NEXT="defaultgrade"/>
        <FIELD NAME="defaultgrade" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="1" SEQUENCE="false" ENUM="false" PREVIOUS="generalfeedback" NEXT="penalty"/>
        <FIELD NAME="penalty" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0.1" SEQUENCE="false" ENUM="false" PREVIOUS="defaultgrade" NEXT="qtype"/>
        <FIELD NAME="qtype" TYPE="char" LENGTH="20" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="penalty" NEXT="length"/>
        <FIELD NAME="length" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="1" SEQUENCE="false" ENUM="false" PREVIOUS="qtype" NEXT="stamp"/>
        <FIELD NAME="stamp" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="length" NEXT="version"/>
        <FIELD NAME="version" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="stamp" NEXT="hidden"/>
        <FIELD NAME="hidden" TYPE="int" LENGTH="1" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="version"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question" NEXT="category"/>
        <KEY NAME="category" TYPE="foreign" FIELDS="category" REFTABLE="question_categories" REFFIELDS="id" PREVIOUS="primary" NEXT="parent"/>
        <KEY NAME="parent" TYPE="foreign" FIELDS="parent" REFTABLE="question" REFFIELDS="id" COMMENT="note that to make this recursive FK working someday, the parent field must be declared NULL" PREVIOUS="category"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="question_answers" COMMENT="Answers, with a fractional grade (0-1) and feedback" PREVIOUS="question" NEXT="question_dataset_definitions">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="question"/>
        <FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="answer"/>
        <FIELD NAME="answer" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="question" NEXT="fraction"/>
        <FIELD NAME="fraction" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="answer" NEXT="feedback"/>
        <FIELD NAME="feedback" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="fraction"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_answers" NEXT="question"/>
        <KEY NAME="question" TYPE="foreign" FIELDS="question" REFTABLE="question" REFFIELDS="id" PREVIOUS="primary"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="question_dataset_definitions" COMMENT="Organises and stores properties for dataset items" PREVIOUS="question_answers" NEXT="question_dataset_items">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="category"/>
        <FIELD NAME="category" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="name"/>
        <FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="category" NEXT="type"/>
        <FIELD NAME="type" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="name" NEXT="options"/>
        <FIELD NAME="options" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="type" NEXT="itemcount"/>
        <FIELD NAME="itemcount" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="options"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_dataset_definitions" NEXT="category"/>
        <KEY NAME="category" TYPE="foreign" FIELDS="category" REFTABLE="question_categories" REFFIELDS="id" PREVIOUS="primary"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="question_dataset_items" COMMENT="Individual dataset items" PREVIOUS="question_dataset_definitions" NEXT="question_datasets">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="definition"/>
        <FIELD NAME="definition" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="itemnumber"/>
        <FIELD NAME="itemnumber" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="definition" NEXT="value"/>
        <FIELD NAME="value" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="itemnumber"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_dataset_items"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="definition" UNIQUE="false" FIELDS="definition"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="question_datasets" COMMENT="Many-many relation between questions and dataset definitions" PREVIOUS="question_dataset_items" NEXT="question_numerical_units">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="question"/>
        <FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="datasetdefinition"/>
        <FIELD NAME="datasetdefinition" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="question"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_datasets" NEXT="question"/>
        <KEY NAME="question" TYPE="foreign" FIELDS="question" REFTABLE="question" REFFIELDS="id" PREVIOUS="primary" NEXT="datasetdefinition"/>
        <KEY NAME="datasetdefinition" TYPE="foreign" FIELDS="datasetdefinition" REFTABLE="question_dataset_definitions" REFFIELDS="id" PREVIOUS="question"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="question-datasetdefinition" UNIQUE="false" FIELDS="question, datasetdefinition"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="question_numerical_units" COMMENT="Optional unit options for numerical questions" PREVIOUS="question_datasets" NEXT="question_attempts">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="question"/>
        <FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="multiplier"/>
        <FIELD NAME="multiplier" TYPE="number" LENGTH="40" NOTNULL="true" UNSIGNED="false" DEFAULT="1.00000000000000000000" SEQUENCE="false" ENUM="false" DECIMALS="20" PREVIOUS="question" NEXT="unit"/>
        <FIELD NAME="unit" TYPE="char" LENGTH="50" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="multiplier"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_numerical_units" NEXT="question"/>
        <KEY NAME="question" TYPE="foreign" FIELDS="question" REFTABLE="question" REFFIELDS="id" PREVIOUS="primary"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="question_attempts" COMMENT="Student attempts. This table gets extended by the modules" PREVIOUS="question_numerical_units" NEXT="question_states">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="modulename"/>
        <FIELD NAME="modulename" TYPE="char" LENGTH="20" NOTNULL="true" DEFAULT="quiz" SEQUENCE="false" ENUM="false" PREVIOUS="id"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_attempts"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="question_states" COMMENT="Stores user responses to an attempt, and percentage grades" PREVIOUS="question_attempts" NEXT="question_sessions">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="attempt"/>
        <FIELD NAME="attempt" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="question"/>
        <FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="attempt" NEXT="originalquestion"/>
        <FIELD NAME="originalquestion" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="question" NEXT="seq_number"/>
        <FIELD NAME="seq_number" TYPE="int" LENGTH="6" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="originalquestion" NEXT="answer"/>
        <FIELD NAME="answer" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="seq_number" NEXT="timestamp"/>
        <FIELD NAME="timestamp" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="answer" NEXT="event"/>
        <FIELD NAME="event" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timestamp" NEXT="grade"/>
        <FIELD NAME="grade" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="event" NEXT="raw_grade"/>
        <FIELD NAME="raw_grade" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="grade" NEXT="penalty"/>
        <FIELD NAME="penalty" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="raw_grade"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_states" NEXT="attempt"/>
        <KEY NAME="attempt" TYPE="foreign" FIELDS="attempt" REFTABLE="question_attempts" REFFIELDS="id" PREVIOUS="primary" NEXT="question"/>
        <KEY NAME="question" TYPE="foreign" FIELDS="question" REFTABLE="question" REFFIELDS="id" PREVIOUS="attempt"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="question_sessions" COMMENT="Gives ids of the newest open and newest graded states" PREVIOUS="question_states" NEXT="quiz">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="attemptid"/>
        <FIELD NAME="attemptid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="questionid"/>
        <FIELD NAME="questionid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="attemptid" NEXT="newest"/>
        <FIELD NAME="newest" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="questionid" NEXT="newgraded"/>
        <FIELD NAME="newgraded" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="newest" NEXT="sumpenalty"/>
        <FIELD NAME="sumpenalty" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="newgraded" NEXT="manualcomment"/>
        <FIELD NAME="manualcomment" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="sumpenalty"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for question_sessions" NEXT="attemptid"/>
        <KEY NAME="attemptid" TYPE="foreign" FIELDS="attemptid" REFTABLE="question_attempts" REFFIELDS="id" PREVIOUS="primary" NEXT="questionid"/>
        <KEY NAME="questionid" TYPE="foreign" FIELDS="questionid" REFTABLE="question" REFFIELDS="id" PREVIOUS="attemptid" NEXT="newest"/>
        <KEY NAME="newest" TYPE="foreign" FIELDS="newest" REFTABLE="question_states" REFFIELDS="id" PREVIOUS="questionid" NEXT="newgraded"/>
        <KEY NAME="newgraded" TYPE="foreign" FIELDS="newgraded" REFTABLE="question_states" REFFIELDS="id" PREVIOUS="newest"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="attemptid-questionid" UNIQUE="true" FIELDS="attemptid, questionid"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="quiz" COMMENT="Main information about each quiz" PREVIOUS="question_sessions" NEXT="quiz_attempts">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="course"/>
        <FIELD NAME="course" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="name"/>
        <FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="course" NEXT="intro"/>
        <FIELD NAME="intro" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="name" NEXT="timeopen"/>
        <FIELD NAME="timeopen" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="intro" NEXT="timeclose"/>
        <FIELD NAME="timeclose" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timeopen" NEXT="optionflags"/>
        <FIELD NAME="optionflags" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timeclose" NEXT="penaltyscheme"/>
        <FIELD NAME="penaltyscheme" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="optionflags" NEXT="attempts"/>
        <FIELD NAME="attempts" TYPE="int" LENGTH="6" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="penaltyscheme" NEXT="attemptonlast"/>
        <FIELD NAME="attemptonlast" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="attempts" NEXT="grademethod"/>
        <FIELD NAME="grademethod" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="1" SEQUENCE="false" ENUM="false" PREVIOUS="attemptonlast" NEXT="decimalpoints"/>
        <FIELD NAME="decimalpoints" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="2" SEQUENCE="false" ENUM="false" PREVIOUS="grademethod" NEXT="review"/>
        <FIELD NAME="review" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="decimalpoints" NEXT="questionsperpage"/>
        <FIELD NAME="questionsperpage" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="review" NEXT="shufflequestions"/>
        <FIELD NAME="shufflequestions" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="questionsperpage" NEXT="shuffleanswers"/>
        <FIELD NAME="shuffleanswers" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="shufflequestions" NEXT="questions"/>
        <FIELD NAME="questions" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="shuffleanswers" NEXT="sumgrades"/>
        <FIELD NAME="sumgrades" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="questions" NEXT="grade"/>
        <FIELD NAME="grade" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="sumgrades" NEXT="timecreated"/>
        <FIELD NAME="timecreated" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="grade" NEXT="timemodified"/>
        <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timecreated" NEXT="timelimit"/>
        <FIELD NAME="timelimit" TYPE="int" LENGTH="2" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timemodified" NEXT="password"/>
        <FIELD NAME="password" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="timelimit" NEXT="subnet"/>
        <FIELD NAME="subnet" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="password" NEXT="popup"/>
        <FIELD NAME="popup" TYPE="int" LENGTH="4" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="subnet" NEXT="delay1"/>
        <FIELD NAME="delay1" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="popup" NEXT="delay2"/>
        <FIELD NAME="delay2" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="delay1"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for quiz"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="course" UNIQUE="false" FIELDS="course"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="quiz_attempts" COMMENT="Stores various attempts on a quiz" PREVIOUS="quiz" NEXT="quiz_grades">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="uniqueid"/>
        <FIELD NAME="uniqueid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="quiz"/>
        <FIELD NAME="quiz" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="uniqueid" NEXT="userid"/>
        <FIELD NAME="userid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="quiz" NEXT="attempt"/>
        <FIELD NAME="attempt" TYPE="int" LENGTH="6" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="userid" NEXT="sumgrades"/>
        <FIELD NAME="sumgrades" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="attempt" NEXT="timestart"/>
        <FIELD NAME="timestart" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="sumgrades" NEXT="timefinish"/>
        <FIELD NAME="timefinish" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timestart" NEXT="timemodified"/>
        <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timefinish" NEXT="layout"/>
        <FIELD NAME="layout" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="timemodified" NEXT="preview"/>
        <FIELD NAME="preview" TYPE="int" LENGTH="3" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="layout"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for quiz_attempts" NEXT="uniqueid"/>
        <KEY NAME="uniqueid" TYPE="foreign-unique" FIELDS="uniqueid" REFTABLE="question_attempts" REFFIELDS="id" PREVIOUS="primary" NEXT="quiz"/>
        <KEY NAME="quiz" TYPE="foreign" FIELDS="quiz" REFTABLE="quiz" REFFIELDS="id" PREVIOUS="uniqueid"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="userid" UNIQUE="false" FIELDS="userid"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="quiz_grades" COMMENT="Final quiz grade (may be best of several attempts)" PREVIOUS="quiz_attempts" NEXT="quiz_question_instances">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="quiz"/>
        <FIELD NAME="quiz" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="userid"/>
        <FIELD NAME="userid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="quiz" NEXT="grade"/>
        <FIELD NAME="grade" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="userid" NEXT="timemodified"/>
        <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="grade"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for quiz_grades" NEXT="quiz"/>
        <KEY NAME="quiz" TYPE="foreign" FIELDS="quiz" REFTABLE="quiz" REFFIELDS="id" PREVIOUS="primary"/>
      </KEYS>
      <INDEXES>
        <INDEX NAME="userid" UNIQUE="false" FIELDS="userid"/>
      </INDEXES>
    </TABLE>
    <TABLE NAME="quiz_question_instances" COMMENT="The grade for a question in a quiz" PREVIOUS="quiz_grades" NEXT="quiz_question_versions">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="quiz"/>
        <FIELD NAME="quiz" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="question"/>
        <FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="quiz" NEXT="grade"/>
        <FIELD NAME="grade" TYPE="int" LENGTH="6" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="question"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for quiz_question_instances" NEXT="quiz"/>
        <KEY NAME="quiz" TYPE="foreign" FIELDS="quiz" REFTABLE="quiz" REFFIELDS="id" PREVIOUS="primary" NEXT="question"/>
        <KEY NAME="question" TYPE="foreign" FIELDS="question" REFTABLE="question" REFFIELDS="id" PREVIOUS="quiz"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="quiz_question_versions" COMMENT="quiz_question_versions table retrofitted from MySQL" PREVIOUS="quiz_question_instances" NEXT="quiz_feedback">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="quiz"/>
        <FIELD NAME="quiz" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="oldquestion"/>
        <FIELD NAME="oldquestion" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="quiz" NEXT="newquestion"/>
        <FIELD NAME="newquestion" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="oldquestion" NEXT="originalquestion"/>
        <FIELD NAME="originalquestion" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="newquestion" NEXT="userid"/>
        <FIELD NAME="userid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="originalquestion" NEXT="timestamp"/>
        <FIELD NAME="timestamp" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="userid"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for quiz_question_versions" NEXT="quiz"/>
        <KEY NAME="quiz" TYPE="foreign" FIELDS="quiz" REFTABLE="quiz" REFFIELDS="id" PREVIOUS="primary" NEXT="oldquestion"/>
        <KEY NAME="oldquestion" TYPE="foreign" FIELDS="oldquestion" REFTABLE="question" REFFIELDS="id" PREVIOUS="quiz" NEXT="newquestion"/>
        <KEY NAME="newquestion" TYPE="foreign" FIELDS="newquestion" REFTABLE="question" REFFIELDS="id" PREVIOUS="oldquestion" NEXT="originalquestion"/>
        <KEY NAME="originalquestion" TYPE="foreign" FIELDS="originalquestion" REFTABLE="question" REFFIELDS="id" PREVIOUS="newquestion"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="quiz_feedback" COMMENT="Feedback given to students based on their overall score on the test" PREVIOUS="quiz_question_versions">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="quizid"/>
        <FIELD NAME="quizid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="feedbacktext"/>
        <FIELD NAME="feedbacktext" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="quizid" NEXT="mingrade"/>
        <FIELD NAME="mingrade" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="feedbacktext" NEXT="maxgrade"/>
        <FIELD NAME="maxgrade" TYPE="float" NOTNULL="true" UNSIGNED="false" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="mingrade"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for quiz_feedback" NEXT="quizid"/>
        <KEY NAME="quizid" TYPE="foreign" FIELDS="quizid" REFTABLE="quiz" REFFIELDS="id" PREVIOUS="primary"/>
      </KEYS>
    </TABLE>
  </TABLES>
  <STATEMENTS>
    <STATEMENT NAME="insert log_display" TYPE="insert" TABLE="log_display" COMMENT="Initial insert of records on table log_display">
      <SENTENCES>
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'add', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'update', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'view', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'report', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'attempt', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'submit', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'review', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'editquestions', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'preview', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'start attempt', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'close attempt', 'quiz', 'name')" />
        <SENTENCE TEXT="(module, action, mtable, field) VALUES ('quiz', 'continue attempt', 'quiz', 'name')" />
      </SENTENCES>
    </STATEMENT>
  </STATEMENTS>
</XMLDB>