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<h1 class="title">Efficient XML Interchange Current Status</h1>
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<ul class="w3c_toc">
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<li>
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<a href="#completed">completed work</a>
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— including <a href="#stds">standards</a>
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<span class="bullet">• </span>
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<a href="#drafts">drafts</a>
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<div id="w3c_generated_status">
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<p id="w3c_toggle_include" class="default_open intro tPadding">This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title
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links to the most recent version of a document.
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For related introductory information, see: <a href="http://www.w3.org/standards/xml/core">XML Essentials</a>.</p>
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<h2 id="completed">Completed Work</h2>
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<p>
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<a href="/TR/tr-technology-stds">W3C Recommendations</a> have
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been reviewed by W3C Members, by software developers, and by other
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W3C groups and interested parties, and are endorsed by the
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Director as Web Standards. Learn more about the <a href="/Consortium/Process/tr#rec-advance">W3C Recommendation
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Track</a>.</p>
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<p>
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<a href="/2005/10/Process-20051014/tr.html#q75">Group Notes</a> are <em>not</em> standards and do not
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have the same level of W3C endorsement.</p>
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<h3 id="stds">Standards</h3>
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<div class="data lMargin rMargin">
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<table class="w3c_spec_summary_table">
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<tbody>
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<tr class="lastRow">
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<td class="table_datecol">
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<a href="../history/exi" title="Efficient XML Interchange (EXI) Format 1.0 publication history">2011-03-10</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is REC" href="http://www.w3.org/TR/2011/REC-exi-20110310/">Efficient XML Interchange (EXI) Format 1.0</a>
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</h4>
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<p class="rec_support_data">
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<a href="http://www.w3.org/TR/2011/REC-exi-20110310/,translations">translations</a>
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·
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<a href="http://www.w3.org/XML/EXI/exi-10-errata">errata</a>
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</p>
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<div class="expand_description">
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<p>The specification of the EXI format, a compact representation of an
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XML document that saves space and bandwidth, and optimizes
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processing speed.</p>
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</div>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<h3 id="notes">Group Notes</h3>
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<div class="data lMargin rMargin">
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<table class="w3c_spec_summary_table">
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<tbody>
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<tr>
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<td class="table_datecol">
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<a href="../history/xbc-characterization" title="XML Binary Characterization publication history">2005-03-31</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is NOTE" href="http://www.w3.org/TR/2005/NOTE-xbc-characterization-20050331/">XML Binary Characterization</a>
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</h4>
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<div class="expand_description">
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<p>This document presents the final conclusions of the XBC study.</p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<a href="../history/xbc-measurement" title="XML Binary Characterization Measurement Methodologies publication history">2005-03-31</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is NOTE" href="http://www.w3.org/TR/2005/NOTE-xbc-measurement-20050331/">XML Binary Characterization Measurement Methodologies</a>
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</h4>
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<div class="expand_description">
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<p>Measurement methodologies for the XBC Properties : methods, caveats,
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test scenarios.</p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<a href="../history/xbc-properties" title="XML Binary Characterization Properties publication history">2005-03-31</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is NOTE" href="http://www.w3.org/TR/2005/NOTE-xbc-properties-20050331/">XML Binary Characterization Properties</a>
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</h4>
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<div class="expand_description">
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<p>The list of the properties of a binary encoding of XML that would be
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used in the XBC use cases.</p>
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</div>
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</td>
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</tr>
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<tr class="lastRow">
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<td>
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<a href="../history/xbc-use-cases" title="XML Binary Characterization Use Cases publication history">2005-03-31</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is NOTE" href="http://www.w3.org/TR/2005/NOTE-xbc-use-cases-20050331/">XML Binary Characterization Use Cases</a>
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</h4>
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<div class="expand_description">
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<p>The start of the XBC work : describing the broad range of use cases
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for a binary encoding of XML information.</p>
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</div>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<h2 id="drafts">Drafts</h2>
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<p>Below are draft documents:
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<a href="/2005/10/Process-20051014/tr.html#RecsWD">other Working Drafts</a>.
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Some of these may become Web Standards through the <a href="/Consortium/Process/tr#rec-advance">W3C Recommendation Track
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process</a>. Others may be published as Group Notes or
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become obsolete specifications.</p>
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<h3 id="wd">Other Working Drafts</h3>
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<div class="data lMargin rMargin">
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<table class="w3c_spec_summary_table">
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<tbody>
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<tr>
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<td class="table_datecol">
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<a href="../history/exi-profile" title="Efficient XML Interchange (EXI) Profile publication history">2011-08-16</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is WD" href="http://www.w3.org/TR/2011/WD-exi-profile-20110816/">Efficient XML Interchange (EXI) Profile</a>
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</h4>
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<div class="expand_description">
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<p>This profile of the EXI 1.0 specification allows restrictions on the memory
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consumption of EXI internal structures. It is intended for application areas
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and devices that are not capable or allowed to require arbitrary memory
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growth at runtime. Certain evaluations of EXI in the context of such areas
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exposed some challenges to the attempt to restrict memory usage predictably
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within their limited respective threshold.
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</p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<a href="../history/exi-primer" title="Efficient XML Interchange (EXI) Primer publication history">2009-12-08</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is WD" href="http://www.w3.org/TR/2009/WD-exi-primer-20091208/">Efficient XML Interchange (EXI) Primer</a>
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</h4>
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<div class="expand_description">
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<p>This is a non-normative document intended to provide an easily
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readable technical background on the Efficient XML Interchange
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(EXI) format. It is oriented towards quickly understanding how the
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EXI format can be used in practice and how options can be set to
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achieve specific needs. Section 2.
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Concepts describes the structure of an EXI document and
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introduces the notions of EXI header, EXI body and EXI grammar
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which are fundamental to the understanding of the EXI format.
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Additional details about data type representation, compression, and
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their interaction with other format features are presented.
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Finally, Section 3. Efficient XML
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Interchange by Example provides a detailed, bit-level
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description of a schema-less example.</p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<a href="../history/exi-evaluation" title="Efficient XML Interchange Evaluation publication history">2009-04-07</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is WD" href="http://www.w3.org/TR/2009/WD-exi-evaluation-20090407">Efficient XML Interchange Evaluation</a>
|
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</h4>
|
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<div class="expand_description">
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<p>This Working Draft is an evaluation of the Efficient XML Interchange
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(EXI) Format 1.0 with reference to the Properties identified by the
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XML Binary Characterization (XBC)
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Working Group, relative to XML, gzipped XML and ASN.1 PER. It is
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conducted using the XBC
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Measurement methodology. For the "compactness" and
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"processing
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efficiency" Properties, the performance is measured with EXI
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Measurement framework, over the test data
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collected for the EXI measurements, representing XBC Use Cases. </p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<a href="../history/exi-impacts" title="Efficient XML Interchange (EXI) Impacts publication history">2008-09-03</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is WD" href="http://www.w3.org/TR/2008/WD-exi-impacts-20080903">Efficient XML Interchange (EXI) Impacts</a>
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</h4>
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<div class="expand_description">
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<p>The Efficient XML Interchange (EXI) format defines a new
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representation for the Extensible Markup Language (XML) Information
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Set. The introduction of such a format may cause disruption in
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systems that have so far been able to assume XML as the only
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representation of XML Information Set data. This document reviews
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areas where the introduction of EXI may disrupt or otherwise have
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an impact on existing XML technologies, XML processors, and
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applications. It also describes EXI design features and steps that
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may be taken by implementors to reduce or eliminate disruption and
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impacts.</p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<a href="../history/exi-best-practices" title="Efficient XML Interchange (EXI) Best Practices publication history">2007-12-19</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is WD" href="http://www.w3.org/TR/2007/WD-exi-best-practices-20071219/">Efficient XML Interchange (EXI) Best Practices</a>
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</h4>
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<div class="expand_description">
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<p>The purpose of this document is to provide guidelines for the
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interoperable deployment of the Efficient XML Interchange (EXI)
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format. It provides explanations of format features and techniques
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to support interoperable information exchanges using EXI. While
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intended primarily as a practical guide for systems architects and
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programmers, it also presents information suitable for the general
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reader interested in EXI's intended role in the expanding Web.</p>
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</div>
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</td>
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</tr>
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<tr class="lastRow">
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<td>
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<a href="../history/exi-measurements" title="Efficient XML Interchange Measurements Note publication history">2007-07-25</a>
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</td>
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<td>
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<h4 class="w3c_status_title">
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<a title="status is WD" href="http://www.w3.org/TR/2007/WD-exi-measurements-20070725/">Efficient XML Interchange Measurements Note</a>
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</h4>
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<div class="expand_description">
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<p>This Working Group Note presents measurement results of various
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high-performance XML interchange encoding formats and their associated
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processors, made by the Efficient XML Interchange (EXI) Working Group. The
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measurements have been conducted following the recommendations of the XML Binary Characterization (XBC)
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Working Group. In particular, this draft covers measurements of the
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properties of "compactness", "processing
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efficiency" and "roundtrip
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support", as defined by the XBC WG. We start by describing the context in
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which this analysis is being made, and the position of an efficient format in
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the landscape of high performance XML strategies. Then we describe the
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measured quantities in detail and the test framework in which they were made,
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and give a short description of each format. Finally, a summary of the
|
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results and the conclusions of the group are included. The
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full measurements and analysis are included in an appendix and supporting
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documents.</p>
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<p>As a result of the measurements described here, the working group selected
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Efficient XML ([EffXML]) to be the
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basis for the proposed encoding specification to be
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prepared as a candidate W3C Recommendation. Follow up work has centered
|
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around integrating some features from the other measured format technologies,
|
|
particularly variations for both more efficient structural and value
|
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encodings. </p>
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</div>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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