Deadlock when updating different rows on a single table with one clustered index

Deadlock when updating different rows on a single table with one clustered index. Can anyone explain why?
<event name="xml_deadlock_report" package="sqlserver" timestamp="2014-07-30T06:12:17.839Z">
<data name="xml_report">
<value>
<deadlock>
<victim-list>
<victimProcess id="process1209f498" />
</victim-list>
<process-list>
<process id="process1209f498" taskpriority="0" logused="1260" waitresource="KEY: 8:72057654588604416 (8ceb12026762)" waittime="1396" ownerId="1145783115" transactionname="implicit_transaction"
lasttranstarted="2014-07-30T02:12:16.430" XDES="0x3a2daa538" lockMode="X" schedulerid="46" kpid="7868" status="suspended" spid="262" sbid="0" ecid="0" priority="0"
trancount="2" lastbatchstarted="2014-07-30T02:12:16.440" lastbatchcompleted="2014-07-30T02:12:16.437" lastattention="1900-01-01T00:00:00.437" clientapp="Internet Information Services" hostname="CHTWEB-CH2-11P"
hostpid="12776" loginname="chatuser" isolationlevel="read uncommitted (1)" xactid="1145783115" currentdb="8" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128058">
<inputbuf>
UPDATE analyst_monitor SET cam_status = N'4', cam_event_data = N'sales1', cam_event_time = current_timestamp , cam_modified_time = current_timestamp , cam_room = '' WHERE cam_analyst_name=N'ABCD' AND cam_window= 2 </inputbuf>
</process>
<process id="process9cba188" taskpriority="0" logused="2084" waitresource="KEY: 8:72057654588604416 (2280b457674a)" waittime="1397" ownerId="1145783104" transactionname="implicit_transaction"
lasttranstarted="2014-07-30T02:12:16.427" XDES="0x909616d28" lockMode="X" schedulerid="23" kpid="8704" status="suspended" spid="155" sbid="0" ecid="0" priority="0"
trancount="2" lastbatchstarted="2014-07-30T02:12:16.440" lastbatchcompleted="2014-07-30T02:12:16.437" lastattention="1900-01-01T00:00:00.437" clientapp="Internet Information Services" hostname="CHTWEB-CH2-11P"
hostpid="12776" loginname="chatuser" isolationlevel="read uncommitted (1)" xactid="1145783104" currentdb="8" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128058">
<inputbuf>
UPDATE analyst_monitor SET cam_status = N'4', cam_event_data = N'sales2', cam_event_time = current_timestamp , cam_modified_time = current_timestamp , cam_room = '' WHERE cam_analyst_name=N'12345' AND cam_window= 1 </inputbuf>
</process>
</process-list>
<resource-list>
<keylock hobtid="72057654588604416" dbid="8" objectname="CHAT.dbo.analyst_monitor" indexname="IX_Clust_scam_an_name_window" id="lock4befe1100" mode="X" associatedObjectId="72057654588604416">
<owner-list>
<owner id="process9cba188" mode="X" />
</owner-list>
<waiter-list>
<waiter id="process1209f498" mode="X" requestType="wait" />
</waiter-list>
</keylock>
<keylock hobtid="72057654588604416" dbid="8" objectname="CHAT.dbo.analyst_monitor" indexname="IX_Clust_scam_an_name_window" id="lock18ee1ab00" mode="X" associatedObjectId="72057654588604416">
<owner-list>
<owner id="process1209f498" mode="X" />
</owner-list>
<waiter-list>
<waiter id="process9cba188" mode="X" requestType="wait" />
</waiter-list>
</keylock>
</resource-list>
</deadlock>
</value>
</data>
</event>

To be honest, I don't think the transaction is necessary, but the developers put it there anyway. The select statement will put the result cam_status
into a variable, and then depends on its value, it will decide whether to execute the second update statement or not. I still can't upload the screen-shot, because it says it needs to verify my account at first. No clue at all. But it is very simple, just
like:
Clustered Index Update
[analyst_monitor].[IX_Clust_scam_an_name_window]
cost: 100%
By the way, for some reason, I can't find the object based on the associatedObjectId listed in the XML
<keylock hobtid="72057654588604416" dbid="8" objectname="CHAT.dbo.analyst_monitor"
indexname="IX_Clust_scam_an_name_window" id="lock4befe1100" mode="X" associatedObjectId="72057654588604416">
For example:
SELECT * FROM sys.partition WHERE hobt_id = 72057654588604416
This return nothing. Not sure why.

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if (isset($_SERVER['QUERY_STRING'])) {
    $updateGoTo .= (strpos($updateGoTo, '?')) ? "&" : "?";
    $updateGoTo .= $_SERVER['QUERY_STRING'];
header(sprintf("Location: %s", $updateGoTo));
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>r</title>
<link href="styles/style.css" rel="stylesheet" type="text/css" media="screen" />
<link href="styles/in_styles.css" rel="stylesheet" type="text/css" media="screen" />
</head>
<body>
<div id="wrapper">
     <div id="header-wrapper">
     </div>
     
     <div id="page">
          <div id="page-bgtop">
               <div id="page-bgbtm">
                    <div id="content">
                         <div class="post">
                           <div style="clear: both;">
                        <form name="form1" id="form1" method="post" action="<?php echo $editFormAction; ?>">
                        <table border="1" align="center">
                          <tr>
                            <th>Student ID</th>
                            <th>Lesson ID</th>
                            <th>Semester</th>
                            <th>Point</th>
                          </tr>
                          <?php do { ?>
                            <tr>
                              <td class="data"><label for="sid[]"></label>
                              <input name="sid[]" type="text" id="sid[]" value="<?php echo $row_rs1['sid']; ?>" size="9" readonly="readonly" /></td>
                              <td class="data"><label for="lid[]"></label>
                              <input name="lid[]" type="text" id="lid[]" value="<?php echo $row_rs1['lid']; ?>" size="5" readonly="readonly" /></td>
                              <td class="data"><label for="term[]"></label>
                              <input name="term[]" type="text" id="term[]" value="<?php echo $row_rs1['term']; ?>" size="4" readonly="readonly" /></td>
                              <td><label for="point[]"></label>
                                <input name="point[]" type="text" id="point[]" value="<?php echo $row_rs1['point']; ?>" size="4" />
                          </tr>
                            <?php } while ($row_rs1 = mysql_fetch_assoc($rs1)); ?>
                        </table>
                        <p>
                          <input type="submit" name="Submit" id="Submit" value="Submit" />
                          <input type="hidden" name="MM_update" value="form1" />
                        </p>
                        </form>
                           </div>
                         </div>
                    <div style="clear: both;">
                </div>
                    </div>
                    
                    
                    <div style="clear: both;"> </div>
               </div>
          </div>
     </div>
     
</div>

</body>
</html>
<?php
mysql_free_result($rs1);
?>
All i want is that when users click on SUBMIT button values of point column in s_lessons(database table) be updated by new entries from user.
i did my best and result with that code is :
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' lid=888, sid=860935422, term=902' at line 1
I would appreciate any idea.
with prior thanks

Go to the Row Properties, and in the Visibility tab, you have "Show or hide based on an expression". You can use this to write an expression that resolves to true if the row should be hidden, false otherwise.
Additionally, in the Matrix properties you should take a look at the filters section, perhaps you can achieve what you wish to achieve through there by removing the unnecessary rows instead of just hiding them.
It's only so much I can help you with the limited information. If you require further help, please provide us with more information such as what data are you displaying, what's the criteria to hiding rows, etc...
Regards
Andrew Borg Cardona

Deadlock when updating different rows on a single table with one clustered index

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