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authorlresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>2009-11-21 07:42:15 +0000
committerlresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>2009-11-21 07:42:15 +0000
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+<?xml version="1.0" encoding="UTF-8"?>
+<document>
+ <properties>
+ <title>Tuscany SDO</title>
+ <bannertitle>Tuscany SDO</bannertitle>
+ <author email="kelvingoodson+tuscanysite@gmail.com">Kelvin Goodson</author>
+ <tab>sdo</tab>
+ </properties>
+ <body>
+ <section name="Service Data Objects - Overview">
+ <p>
+ Service Data Objects simplify and unify SOA data access architecture and code in a heterogeneous environment.
+ SDO is programming language neutral. Within Tuscany it is being implemented in Java and in C++. A
+ <A href="http://pecl.php.net/package/sdo"> PHP version of SDO </A> is available for download from the
+ <A href="http://pecl.php.net/">PHP Extensions Community Library (PECL)</A>.
+ </p>
+ <p>
+ SDO can be used to represent data structures from the presentation layer all the way
+ through to the persistence layer.
+ </p>
+ <p>
+ <img src="./images/sdocontext_sm.jpg" alt="sdo context" />
+ </p>
+ <p>
+ SDO is a natural format for representing data on the wire in an SOA environment.
+ </p>
+ <p>
+ <img src="./images/sdo_soa_sm.jpg" alt="sdo in soa"/>
+ </p>
+ <p>
+ <A href="das_index.html">Data Access Services (DAS)</A> access data sources and produce data graphs. Modifications made
+ to graphs by the application are summarized in the graph structure, and the DAS can use this
+ change summary to update the original data source.
+ </p>
+ </section>
+ </body>
+</document>