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<h1>1. Overview</h1>
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<h2>1.3. Key Features of Virtuoso</h2>
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<td>Figure: 1.3.1. OpenLink Virtuoso Product Architecture</td>
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<h3>1.3.2. XML Document Storage & Creation</h3>
<p>Virtuoso enables you to develop eBusiness solutions that use <strong>XML</strong>
as a common data access foundation layer that provides transparent access
to structured and unstructured data. XML Data documents can be created
internally, or imported from around the Web and then stored in Virtuoso.
You can also create dynamic XML documents by transforming SQL to XML
on the fly, leveraging data that resides within homogeneous and/or
heterogeneous database(s). <strong>XPATH 2.0</strong> query language support enables you to
query entire XML Documents using and industry standard query language.
The Virtuoso Server provides some basic support for the
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<strong>XQuery 1.0</strong> XML Query Language</a>
specification.
There is <strong>XML Schema</strong> support for extending Virtuoso Data
types used by SOAP Services.</p>
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<h3>1.3.3. Web Page Hosting</h3>
<p>Virtuoso has an integrated HTTP web server, for static HTML pages, or
dynamic content using <a href="vsp1.html">Virtuoso Server Pages
(<strong>VSP</strong>)</a>.
Hosting and execution of <strong>PHP4</strong> scripts is supported
via Virtuoso Server Extensions Interface (VSEI) for Zend.</p>
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<h3>1.3.4. Web Services Creation & Hosting</h3>
<p>Enables the creation of <strong>SOAP</strong> compliant Web Services from SQL Stored
Procedures, these procedures may be native to Virtuoso or resident in
third party databases that support ODBC or JDBC. Virtuoso automatically
generates <strong>WSDL</strong> files for the Stored Procedures that it exposes as Web
Services. As a <strong>UDDI</strong> server (registry) all of your Web Services can be
stored for access across the internet or within an intranet. It can also
synchronize data with other UDDI servers.</p>
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<h3>1.3.5. WebDAV Compliant Web Store</h3>
<p>
<strong>WebDAV</strong> support enables Virtuoso to act as the Web Content Store for
all of your eBusiness data, this includes Text, Graphics and Multimedia
files. WebDAV support also enables Virtuoso to play the familiar roles of
a FILE & WEB SERVER, hosting entire Web sites within a single database
file, or across multiple database files.</p>
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<h3>1.3.6. Content Replication & Synchronization</h3>
<p>Virtuoso's sophisticated data replication and synchronization engine
enables the automated distribution and updating of SQL and Web Content
across distributed Virtuoso servers.</p>
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<h3>1.3.7. Transparent Access To Heterogeneous Data</h3>
<p>Virtuoso's Virtual Database Engine enables you to produce Dynamic Web
Content from any major database management system. This enables dynamic,
real-time HTML and XML generation from any number of different database
engines concurrently.</p>
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<h3>1.3.8. Mail Delivery & Retrieval Services</h3>
<p>Virtuoso can act as an <strong>SMTP</strong>, <strong>POP3</strong>, and
<strong>IMAP4</strong> proxy to any email
client. This enables the development and deployment of sophisticated
database driven email solutions.</p>
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<h3>1.3.9. NNTP Aggregation & Serving</h3>
<p>Virtuoso supports the Network News Transfer Protocol used by Internet
newsgroup forums. <strong>NNTP</strong> servers manage the global network of collected
newsgroup postings and represent a vast repository of targeted information
archives. As an NNTP aggregator, Virtuoso enables integration of multiple
news forums around the world. All news content in Virtuoso is dynamically
indexed to provide keyword searches, enabling rapid transformation of
disparate text data into information. Virtuoso also acts as an NNTP server,
enabling creation of new Internet and Intranet News Forums to leverage the
global knowledgebase into eBusiness Intelligence.</p>
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