• serialization
• some protocol

[in a POST parameter]

<methodCall>
   <methodName>examples.getStateName</methodName>
   <params>
      <param>
         <value><i4>41</i4></value>
      </param>
   </params>
</methodCall>

• serialization
• some protocol
• extensibility
• interface discovery

POST /StockQuote? HTTP/1.1
Host: www.stockquoteserver.com
Content-Type: text/xml
Content-Length: nnnn
SOAPMethodName?: Some-Namespace-URI#GetLastTradePrice?
<SOAP:Envelope xmlns:SOAP="urn:schemas-xmlsoap-org:soap.v1">
    <SOAP:Body>
        <m:GetLastTradePrice?
          xmlns:m="Some-Namespace-URI">
            <symbol>DIS</symbol>
        </m:GetLastTradePrice?>
    </SOAP:Body>
</SOAP:Envelope>

• serialization
• protocol
• extensibility
• interface discovery

<?xml version="1.0"?>
<!DOCTYPE ice-payload
        SYSTEM "http://www.ice-ag.org/ICE.dtd";
>
<ice-payload
   payload-id="1998-07-05T02:02:[email protected]"
   timestamp="02:02:23,449"
   ice.version="1.0">
  <ice-header>
    <ice-sender
       sender-id="4af37b30-2c35-11d2-be4a-204c4f4f5020"
       name="XYZ Corporation"
       role="subscriber"/>
    <ice-user-agent>Acme Ray Gun ICE System, V0.9beta</ice-user-agent>
  </ice-header>
  <ice-request
     request-id="1998-07-05T02:02:[email protected]">
    <ice-nop/>
  </ice-request>
</ice-payload>

• serialization
• interface discovery

<?xml version=1.0?>
<!DOCTYPE wddxPacket SYSTEM wddx_0090.dtd>
<wddxPacket version=0.9>
<header/>
   <data>
      <struct>
         <var name=s><string>a string</string></var>
         <var name=a><array length=2>
               <number>10</number>
               <string>second element</string></array></var>
         <var name=obj><struct>
               <var name=s><string>a string</string></var>
               <var name=n><number>-12.456</number></var>
            </struct></var>
      </struct>
   </data>
</wddxPacket>

• serialization
• extensibility
• interface discovery

<PurchaseOrder? xmlns:abcde="http://electrocommerce.org/stuff.xml";>
   <shipTo>
      <abcde:Address>
         <abcde:name>Alice Smith</abcde:name>
         <abcde:street>123 Maple Street</abcde:street>
      </abcde:Address>
   </shipTo>
   <orderDate>1999-05-20</orderDate>
   <shipDate>1999-05-25</shipDate>
   <comments>Get these things to me in a hurry, my lawn is going wild!</comments>
   <Items>
      <Item>
         <productName>Lawnmower, model BUZZ-1</productName>
         <quantity>1</quantity>
         <price>148.95</price>
      </Item>
      <Item>
         <productName>Baby Monitor, model SNOOZE-2</productName>
         <quantity>1</quantity>
         <price>39.98</price>
      </Item>
   </Items>
</PurchaseOrder?>

• serialization
• protocol
• extensibility
• transactions (ACIDity) ????
• remote procedure
• business process

<BrandList? ID=M1.2
  XML:Lang=us-en
  ShortDesc?=Purchase book including s&amp;h
  PayDirection?=Debit >
  <Brand ID =M1.30
    BrandId?=MasterCard
    BrandName?=MasterCard Credit
    BrandLogoNetLocn?=ftp://otplogos.mastercard.com/mastercardcredit
    ProtocolAmountRefs?=M1.33>
  </Brand>
  <Brand ID =M.31
    BrandId?=Visa
    BrandName?=Visa Credit
    BrandLogoNetLocn?=ftp://otplogos.visa.com/visacredit
    ProtocolAmountRefs?=M1.33>
  </Brand>
  <Brand ID =M1.32
    BrandId?=AmericanExpress
    BrandName?=American Express
    BrandLogoNetLocn?=ftp://otplogos.amex.com
    ProtocolAmountRefs? =M1.33 >
  </Brand >
  <ProtocolAmount? ID =M1.33
    PayProtocolRef?=M1.35
    CurrencyAmountRefs?=M1.34>
  </ProtocolAmount?>
  <CurrencyAmount? ID =M1.34
    Amount=10.95
    CurrCode?=USD/>
  <PayProtocol? ID =M1.35
    ProtocolId?=SCCD1.0
    ProtocolName?=Secure Channel Credit/Debit
    PayReqNetLocn?=http://www.example.com/etill/sccd1 >
  </PayProtocol?>
</BrandList?>

• protocol
• vague ref to extensibility
• transactions (ACIDity)
• remote procedure
• business process

• serialization
• protocol
• protocol (no serialization) extensibility
• remote procedure
• business process

<WfMessage? Version= 1.0>
   <WfMessageHeader?>
      <Request><ResponseRequired?>Yes</ResponseRequired?></Request>
      <Key>http://www.XYZcompany.com/wfprocess<;/Key>
      <Operation>CreateProcessInstance?</Operation>
   </WfMessageHeader?>
   <WfMessageBody?>
      <CreateProcessInstance?.Request>
         <Key>http://www.XYZcompany.com/wfprocess<;/Key>
         <ObserverKey?>http://www.mycompany.com/mywork<;/ObserverKey?>
         <ContextData?>
            <Vehicle>
               <VehicleType?>Car</VehicleType?>
               <Specification>
                  <Manufacturer>Mercedes</Manufacturer>
                  <Model>450SL</Model>
               </Specification>
            </Vehicle>
            <Furniture>chair</Furniture>
         </ContextData?>
         <StartImmediately?>Yes</StartImmediately?>
      </CreateProcessInstance?.Request>
   </WfMessageBody?>
</WfMessage?>

• protocol
• ref to extensibility
• transactions (ACIDity)
• remote procedure
• business process

• serialization
• partial extensibility
• interface discovery

[UML model in an XMI document]

<XMI xmi.version="1.1" xmlns:UML="org.omg/standards/UML">
   <XMI.header>
      <XMI.metamodel name="UML" version="1.3" href="UML.xml"/>
      <XMI.model name="example" version="1" href="example.xml"/>
   </XMI.header>
      <XMI.content>
      <UML:Class name="C1">
         <UML:Classifier.feature>
            <UML:Attribute name="a1" visibility="private"/>
         </UML:Classifier.feature>
      </UML:Class>
   </XMI.content>
</XMI>