<xs:group name="transaction_management">
  <xs:annotation>
    <xs:documentation xml:lang="en">Transaction management.this group is used for documentation only, not used in XML file.</xs:documentation>
  </xs:annotation>
  <xs:all>
    <xs:element ref="start_transaction_statement"/>
    <xs:element ref="set_transaction_statement"/>
    <xs:element ref="transaction_characteristics"/>
    <xs:element ref="set_constraints_mode_statement"/>
    <xs:element ref="savepoint_statement"/>
    <xs:element ref="release_savepoint_statement"/>
    <xs:element ref="commit_statement"/>
    <xs:element ref="rollback_statement"/>
  </xs:all>
</xs:group>