moodle-block_mytreestudyplan/db/install.xml

<?xml version="1.0" encoding="UTF-8" ?>
<XMLDB PATH="blocks/gradelevel/db" VERSION="20180917" COMMENT="XMLDB file for Moodle blocks/gradelevel"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="../../../lib/xmldb/xmldb.xsd"
>
  <TABLES>
    <TABLE NAME="block_gradelevel_levelset" COMMENT="Level set table">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
        <FIELD NAME="name" TYPE="char" LENGTH="128" NOTNULL="false" SEQUENCE="false" COMMENT="Name of this level set"/>
        <FIELD NAME="parent_id" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="Optional parent for this level set (references another level set)"/>
        <FIELD NAME="icon" TYPE="text" NOTNULL="false" SEQUENCE="false"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
        <KEY NAME="parent_id_idx" TYPE="foreign" FIELDS="parent_id" REFTABLE="block_gradelevel_levelset" REFFIELDS="id" COMMENT="Parent index for nested levelsets"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="block_gradelevel_levels" COMMENT="Level references">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
        <FIELD NAME="levelset_id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="Reference to specific levelset"/>
        <FIELD NAME="points" TYPE="int" LENGTH="10" NOTNULL="true" DEFAULT="0" SEQUENCE="false" COMMENT="Number of points needed to reach this level"/>
        <FIELD NAME="badgecolor" TYPE="char" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="Color of the level badge. Leave null to use default color (of the levelset 0 set)"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
        <KEY NAME="levelset_id_idx" TYPE="foreign" FIELDS="levelset_id" REFTABLE="block_gradelevel_levelset" REFFIELDS="id" COMMENT="Index for levelset reference"/>
      </KEYS>
    </TABLE>
    <TABLE NAME="block_gradelevel_course_link" COMMENT="Link courses to level sets">
      <FIELDS>
        <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
        <FIELD NAME="course_id" TYPE="int" LENGTH="20" NOTNULL="true" SEQUENCE="false" COMMENT="Id of the course to link"/>
        <FIELD NAME="levelset_id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="false" COMMENT="ID of the levelset a course links to"/>
      </FIELDS>
      <KEYS>
        <KEY NAME="primary" TYPE="primary" FIELDS="id"/>
        <KEY NAME="course_id_idx" TYPE="foreign-unique" FIELDS="course_id" REFTABLE="mdl_course" REFFIELDS="id" COMMENT="Course Id index"/>
        <KEY NAME="levelset_id_idx" TYPE="foreign" FIELDS="levelset_id" REFTABLE="block_gradelevel_levelset" REFFIELDS="id" COMMENT="Levelset id reference"/>
      </KEYS>
    </TABLE>
  </TABLES>
</XMLDB>