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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>