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version 1.72, 2010/02/22 23:03:49 version 1.87, 2010/05/12 01:17:21
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 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html lang="en-US-x-Hixie"><title>Web SQL Database</title><style type="text/css">  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html lang="en-US-x-Hixie"><title>Web SQL Database</title><style type="text/css">
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    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>     <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>Web SQL Database</h1>     <h1>Web SQL Database</h1>
   
    <h2 class="no-num no-toc" id="editor-s-draft-22-february-2010">Editor's Draft 22 February 2010</h2>     <h2 class="no-num no-toc" id="editor-s-draft-12-may-2010">Editor's Draft 12 May 2010</h2>
    <dl><dt>Latest Published Version:</dt>     <dl><dt>Latest Published Version:</dt>
     <dd><a href="http://www.w3.org/TR/webdatabase/">http://www.w3.org/TR/webdatabase/</a></dd>      <dd><a href="http://www.w3.org/TR/webdatabase/">http://www.w3.org/TR/webdatabase/</a></dd>
     <dt>Latest Editor's Draft:</dt>      <dt>Latest Editor's Draft:</dt>
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     <dt>Editors:</dt>      <dt>Editors:</dt>
     <dd><a href="mailto:ian@hixie.ch">Ian Hickson</a>, Google, Inc.</dd>      <dd><a href="mailto:ian@hixie.ch">Ian Hickson</a>, Google, Inc.</dd>
    </dl><p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>     </dl><p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
    &copy; 2009 <a href="http://www.w3.org/"><abbr title="World Wide     &copy; 2010 <a href="http://www.w3.org/"><abbr title="World Wide
    Web Consortium">W3C</abbr></a><sup>&reg;</sup> (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts     Web Consortium">W3C</abbr></a><sup>&reg;</sup> (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts
    Institute of Technology">MIT</abbr></a>, <a href="http://www.ercim.org/"><abbr title="European Research     Institute of Technology">MIT</abbr></a>, <a href="http://www.ercim.org/"><abbr title="European Research
    Consortium for Informatics and Mathematics">ERCIM</abbr></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C     Consortium for Informatics and Mathematics">ERCIM</abbr></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C
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   <a href="http://lists.whatwg.org/pipermail/whatwg-whatwg.org/">archives</a>),    <a href="http://lists.whatwg.org/pipermail/whatwg-whatwg.org/">archives</a>),
   <!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING SENTENCE TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST -->    <!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING SENTENCE TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST -->
   
   or submit them using <a href="http://www.w3.org/Bugs/Public/enter_bug.cgi?product=WebAppsWG&amp;component=Web%20Storage">our    or submit them using <a href="http://www.w3.org/Bugs/Public/enter_bug.cgi?assigned_to=ian%40hixie.ch&amp;blocked=&amp;bug_file_loc=http%3A%2F%2F&amp;bug_severity=normal&amp;bug_status=NEW&amp;comment=&amp;component=Web%20Database%20%28editor%3A%20Ian%20Hickson%29&amp;contenttypeentry=&amp;contenttypemethod=autodetect&amp;contenttypeselection=text%2Fplain&amp;data=&amp;dependson=&amp;description=&amp;form_name=enter_bug&amp;keywords=&amp;maketemplate=Remember%20values%20as%20bookmarkable%20template&amp;op_sys=All&amp;priority=P5&amp;product=WebAppsWG&amp;qa_contact=member-webapi-cvs%40w3.org&amp;rep_platform=All&amp;short_desc=&amp;target_milestone=---&amp;version=unspecified">our
   public bug database</a>.    public bug database</a>.
   
   All feedback is welcome.</p><!-- stability (required) --><p>Implementors should be aware that this specification is not    All feedback is welcome.</p><!-- stability (required) --><p>Implementors should be aware that this specification is not
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   Working Group</a> is the W3C working group responsible for this    Working Group</a> is the W3C working group responsible for this
   specification's progress along the W3C Recommendation track.    specification's progress along the W3C Recommendation track.
   
   This specification is the 22 February 2010 Editor's Draft.    This specification is the 12 May 2010 Editor's Draft.
   </p><!-- required patent boilerplate --><p>This document was produced by a group operating under the <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5    </p><!-- required patent boilerplate --><p>This document was produced by a group operating under the <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5
   February 2004 W3C Patent Policy</a>. W3C maintains a <a href="http://www.w3.org/2004/01/pp-impl/42538/status" rel="disclosure">public list of    February 2004 W3C Patent Policy</a>. W3C maintains a <a href="http://www.w3.org/2004/01/pp-impl/42538/status" rel="disclosure">public list of
   any patent disclosures</a> made in connection with the deliverables    any patent disclosures</a> made in connection with the deliverables
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   <ol>    <ol>
    <li><a href="#user-tracking"><span class="secno">7.1 </span>User tracking</a></li>     <li><a href="#user-tracking"><span class="secno">7.1 </span>User tracking</a></li>
    <li><a href="#sensitivity-of-data"><span class="secno">7.2 </span>Sensitivity of data</a></ol></li>     <li><a href="#sensitivity-of-data"><span class="secno">7.2 </span>Sensitivity of data</a></ol></li>
  <li><a href="#security"><span class="secno">8 </span>Security</a>   <li><a href="#security-storage"><span class="secno">8 </span>Security</a>
   <ol>    <ol>
    <li><a href="#dns-spoofing-attacks"><span class="secno">8.1 </span>DNS spoofing attacks</a></li>     <li><a href="#dns-spoofing-attacks"><span class="secno">8.1 </span>DNS spoofing attacks</a></li>
    <li><a href="#cross-directory-attacks"><span class="secno">8.2 </span>Cross-directory attacks</a></li>     <li><a href="#cross-directory-attacks"><span class="secno">8.2 </span>Cross-directory attacks</a></li>
Line 1252  interface <dfn id="sqltransactionsync">S Line 1242  interface <dfn id="sqltransactionsync">S
   sensitive; it's quite possible for e-mails, calendar appointments,    sensitive; it's quite possible for e-mails, calendar appointments,
   health records, or other confidential documents to be stored in this    health records, or other confidential documents to be stored in this
   mechanism.<p>To this end, user agents should ensure that when deleting data,    mechanism.<p>To this end, user agents should ensure that when deleting data,
   it is promptly deleted from the underlying storage.<h2 id="security"><span class="secno">8 </span>Security</h2><h3 id="dns-spoofing-attacks"><span class="secno">8.1 </span>DNS spoofing attacks</h3><p>Because of the potential for DNS spoofing attacks, one cannot    it is promptly deleted from the underlying storage.<h2 id="security-storage"><span class="secno">8 </span>Security</h2><h3 id="dns-spoofing-attacks"><span class="secno">8.1 </span>DNS spoofing attacks</h3><p>Because of the potential for DNS spoofing attacks, one cannot
   guarantee that a host claiming to be in a certain domain really is    guarantee that a host claiming to be in a certain domain really is
   from that domain. To mitigate this, pages can use SSL. Pages using    from that domain. To mitigate this, pages can use SSL. Pages using
   SSL can be sure that only pages using SSL that have certificates    SSL can be sure that only pages using SSL that have certificates
Line 1291  interface <dfn id="sqltransactionsync">S Line 1281  interface <dfn id="sqltransactionsync">S
   there is little reason to allow Web authors to control the character    there is little reason to allow Web authors to control the character
   encoding used in the disk representation of the data, as all data in    encoding used in the disk representation of the data, as all data in
   JavaScript is implicitly UTF-16.<h3 id="sql-injection"><span class="secno">8.5 </span>SQL injection</h3><p>Authors are strongly recommended to make use of the <code title="">?</code> placeholder feature of the <code title="dom-sqltransaction-executeSql"><a href="#dom-sqltransaction-executesql">executeSql()</a></code> method,    JavaScript is implicitly UTF-16.<h3 id="sql-injection"><span class="secno">8.5 </span>SQL injection</h3><p>Authors are strongly recommended to make use of the <code title="">?</code> placeholder feature of the <code title="dom-sqltransaction-executeSql"><a href="#dom-sqltransaction-executesql">executeSql()</a></code> method,
   and to never construct SQL statements on the fly.<h2 class="no-num" id="references">References</h2><!--REFS--><p>All references are normative unless marked "Non-normative".</p><!-- Dates are only included for standards older than the Web,    and to never construct SQL statements on the fly.<h2 class="no-num" id="references">References</h2><!--REFS--><p>All references are normative unless marked "Non-normative".</p><!-- Dates are only included for standards older than the Web, because the newer ones keep changing. --><dl><dt id="refsCOOKIES">[COOKIES]</dt>
   because the newer ones keep changing. --><dl><dt id="refsCOOKIES">[COOKIES]</dt>  
    <!--     <!--
    <dd><cite><a href="http://www.ietf.org/rfc/rfc2109.txt">HTTP State     <dd><cite><a href="http://www.ietf.org/rfc/rfc2109.txt">HTTP State
    Management Mechanism</a></cite>, D. Kristol, L. Montulli. IETF.</dd>     Management Mechanism</a></cite>, D. Kristol, L. Montulli. IETF.</dd>
    <dd><cite><a href="http://www.ietf.org/rfc/rfc2965.txt">HTTP State Management     <dd><cite><a href="http://www.ietf.org/rfc/rfc2965.txt">HTTP State Management
    Mechanism</a></cite>, D. Kristol, L. Montulli. IETF.</dd>     Mechanism</a></cite>, D. Kristol, L. Montulli. IETF.</dd>
    -->     -->
    <dd><cite><a href="http://tools.ietf.org/html/draft-abarth-cookie">HTTP State     <dd><cite><a href="http://tools.ietf.org/html/draft-ietf-httpstate-cookie">HTTP State
    Management Mechanism</a></cite>, A. Barth. IETF.</dd>     Management Mechanism</a></cite>, A. Barth. IETF.</dd>
   
    <dt id="refsDOMCORE">[DOMCORE]</dt>     <dt id="refsDOMCORE">[DOMCORE]</dt>
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