<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created by RR Donnelley IM Processor 5.0.0.0 using Fujitsu Interstage XWand-->
<schema targetNamespace="http://www.dws-investments.com/20121130" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:difi1="http://www.dws-investments.com/20121130" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric">
  <annotation>
    <appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="difi1-20121130_pre.xml" xlink:title="Presentation Links, all" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="difi1-20121130_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="difi1-20121130_def.xml" xlink:title="Definition Links, all" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="difi1-20121130_lab.xml" xlink:title="Label Links, all" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.dws-investments.com/role/DocumentDocumentandEntityInformation" id="DocumentDocumentandEntityInformation">
        <link:definition>000000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/DocumentRiskReturnSummaryUnlabeledDWSDremanInternationalValueFund" id="DocumentRiskReturnSummaryUnlabeledDWSDremanInternationalValueFund">
        <link:definition>000011 - Document - Risk/Return Summary {Unlabeled} - DWS Dreman International Value Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleShareholderFeesDWSDremanInternationalValueFund" id="ScheduleShareholderFeesDWSDremanInternationalValueFund">
        <link:definition>000012 - Schedule - Shareholder Fees {- DWS Dreman International Value Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleAnnualFundOperatingExpensesDWSDremanInternationalValueFund" id="ScheduleAnnualFundOperatingExpensesDWSDremanInternationalValueFund">
        <link:definition>000013 - Schedule - Annual Fund Operating Expenses {- DWS Dreman International Value Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleExpenseExampleDWSDremanInternationalValueFund" id="ScheduleExpenseExampleDWSDremanInternationalValueFund">
        <link:definition>000014 - Schedule - Expense Example {- DWS Dreman International Value Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleExpenseExampleNoRedemptionDWSDremanInternationalValueFund" id="ScheduleExpenseExampleNoRedemptionDWSDremanInternationalValueFund">
        <link:definition>000015 - Schedule - Expense Example, No Redemption {- DWS Dreman International Value Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleAnnualTotalReturnsDWSDremanInternationalValueFundBarChart" id="ScheduleAnnualTotalReturnsDWSDremanInternationalValueFundBarChart">
        <link:definition>000016 - Schedule - Annual Total Returns - DWS Dreman International Value Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleAverageAnnualTotalReturnsTransposedDWSDremanInternationalValueFund" id="ScheduleAverageAnnualTotalReturnsTransposedDWSDremanInternationalValueFund">
        <link:definition>000017 - Schedule - Average Annual Total Returns {Transposed} {- DWS Dreman International Value Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/DocumentRiskReturnDetailUnlabeledDWSDremanInternationalValueFund" id="DocumentRiskReturnDetailUnlabeledDWSDremanInternationalValueFund">
        <link:definition>000018 - Document - Risk/Return Detail {Unlabeled} - DWS Dreman International Value Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/DisclosureRiskReturnDetailDataElementsDWSDremanInternationalValueFund" id="DisclosureRiskReturnDetailDataElementsDWSDremanInternationalValueFund">
        <link:definition>000019 - Disclosure - Risk/Return Detail Data {Elements} - DWS Dreman International Value Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/DocumentRiskReturnSummaryUnlabeledDWSInternationalFund" id="DocumentRiskReturnSummaryUnlabeledDWSInternationalFund">
        <link:definition>000021 - Document - Risk/Return Summary {Unlabeled} - DWS International Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleShareholderFeesDWSInternationalFund" id="ScheduleShareholderFeesDWSInternationalFund">
        <link:definition>000022 - Schedule - Shareholder Fees {- DWS International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleAnnualFundOperatingExpensesDWSInternationalFund" id="ScheduleAnnualFundOperatingExpensesDWSInternationalFund">
        <link:definition>000023 - Schedule - Annual Fund Operating Expenses {- DWS International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleExpenseExampleDWSInternationalFund" id="ScheduleExpenseExampleDWSInternationalFund">
        <link:definition>000024 - Schedule - Expense Example {- DWS International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleExpenseExampleNoRedemptionDWSInternationalFund" id="ScheduleExpenseExampleNoRedemptionDWSInternationalFund">
        <link:definition>000025 - Schedule - Expense Example, No Redemption {- DWS International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleAnnualTotalReturnsDWSInternationalFundBarChart" id="ScheduleAnnualTotalReturnsDWSInternationalFundBarChart">
        <link:definition>000026 - Schedule - Annual Total Returns - DWS International Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/ScheduleAverageAnnualTotalReturnsTransposedDWSInternationalFund" id="ScheduleAverageAnnualTotalReturnsTransposedDWSInternationalFund">
        <link:definition>000027 - Schedule - Average Annual Total Returns {Transposed} {- DWS International Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/DocumentRiskReturnDetailUnlabeledDWSInternationalFund" id="DocumentRiskReturnDetailUnlabeledDWSInternationalFund">
        <link:definition>000028 - Document - Risk/Return Detail {Unlabeled} - DWS International Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.dws-investments.com/role/DisclosureRiskReturnDetailDataElementsDWSInternationalFund" id="DisclosureRiskReturnDetailDataElementsDWSInternationalFund">
        <link:definition>000029 - Disclosure - Risk/Return Detail Data {Elements} - DWS International Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/rr/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <element name="S000012354Member" id="difi1_S000012354Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000033588Member" id="difi1_C000033588Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000033589Member" id="difi1_C000033589Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000033591Member" id="difi1_C000033591Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000033590Member" id="difi1_C000033590Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="BeforeTaxMember" id="difi1_BeforeTaxMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="RussellGlobalExUsValueIndexMember" id="difi1_RussellGlobalExUsValueIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000006030Member" id="difi1_S000006030Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000016568Member" id="difi1_C000016568Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000016569Member" id="difi1_C000016569Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000016570Member" id="difi1_C000016570Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000016571Member" id="difi1_C000016571Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000016572Member" id="difi1_C000016572Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000016573Member" id="difi1_C000016573Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000019240Member" id="difi1_C000019240Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="MorganStanleyCapitalInternationalMsciEuropeAustralasiaFarEastEafeIndexMember" id="difi1_MorganStanleyCapitalInternationalMsciEuropeAustralasiaFarEastEafeIndexMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
</schema>
