Demos In XML(It can be xml,yml,json,hjson,toml,sql,excel)
<Justdb id="clouddb" comment="This is a demo database description" schema="##default" catelog="clouddb" namespace="org.verydb.clouddb">
  <Import id="demo-id" namespace="demo-namespace"/>
  <Property name="p1" value="pv1" dbms="*"/>
  <Column id="g_table1_id" name="id" type="int"/>
  <Table id="table1" name="Table1">
    <Column id="t_table1_id" refId="g_table1_id" oldNames="table1_id" autoIncrement="true" nullable="true" primaryKey="true" primaryKeyName="pk_table1_id"/>
    <Column id="col1" comment="This is the comment" name="Column1" type="varchar(255)" defaultValue="test"/>
    <Column id="col2" name="Column2" type="varchar(255)"/>
    <xxxx>yyyy</xxxx>
  </Table>
  <Table id="table2" name="Table2">
    <Column id="t_table2_id" name="id" type="int" autoIncrement="true" nullable="true" primaryKey="true" primaryKeyName="pk_table2_id"/>
    <Column id="t_table2_foreignkey" refId="g_table1_id" name="table1_id"/>
    <Column id="col3" name="Column3" type="varchar(255)"/>
  </Table>
  <Include id="include-id" namespace="include-namespace"/>
  <Table id="table2"/>
  <Table id="table3"/>
  <Table id="table4"/>
  <DemoAddon id="this is a demo">
    <sql>demo text</sql>
  </DemoAddon>
</Justdb>