200a40b332
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
179 lines
10 KiB
HTML
179 lines
10 KiB
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<META name="keywords" content="apache, apache tuscany, tuscany, service, services, fabric, soa, service oriented architecture, sca, service component architecture, das, sdo, csa, ruby, opensource">
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<A href="home.html" title="Apache Tuscany">Apache Tuscany</A> > <A href="home.html" title="Home">Home</A> > <A href="" title="DAS Overview">DAS Overview</A>
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<A href="http://mail-archives.apache.org/mod_mbox/tuscany-user">User List</A> | <A href="http://mail-archives.apache.org/mod_mbox/tuscany-dev">Dev List</A> | <A href="http://issues.apache.org/jira/browse/Tuscany">Issue Tracker</A>
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<A href="projects-using-tuscany.html" title="Projects Using Tuscany">Powered By</A></P>
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<DIV class="panel" style="background-color: #ECF4D1;border-color: #b4b4b5;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #b4b4b5;background-color: #C3CDA1;"><B>Tuscany SDO</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;">
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<P><A href="sdo-overview.html" title="SDO Overview">SDO Overview</A><BR>
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<DIV class="panel" style="background-color: #ECF4D1;border-color: #b4b4b5;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #b4b4b5;background-color: #C3CDA1;"><B>Tuscany DAS</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;">
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<P><A href="" title="DAS Overview">DAS Overview </A><BR>
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<A href="das-java.html" title="DAS Java">DAS Java</A><BR>
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<A href="das-c.html" title="DAS C++">DAS C++ </A></P>
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</DIV></DIV></TD><TD class="confluenceTd" valign="top" width="85%">
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<H4><A name="DASOverview-WhatisDataAccessService%3F"></A>What is Data Access Service?</H4>
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<P>Service Data Object(SDO) provides a uniform API for handling different types of data. Data Access Service (DAS) simplifies handling of data when interacting with the back-end data source and frees application developers from dealing with tedious and error-prone transformation between end source types and SDO Data Object Types/properties. </P>
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<P>Tuscany provides implementation for different flavors of DAS in two languages, Java and C++. Please follow the link under each language to explore what is available or is in progress. We welcome your help to extend support for other back-end data source types or complete the existing solutions.</P>
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<P>The following diagram illustrates a typical client interaction. The client starts by reading a graph of data and makes modifications to the graph, possibly by adding elements, and then requests the DAS to push the changes back to the data source.<BR>
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<SPAN class="image-wrap" style=""><IMG src="das-overview.data/sdo_das_sm.jpg" style="border: 0px solid black"></SPAN></P>
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<H3><A name="DASOverview-LearnmoreaboutDAS"></A>Learn more about DAS </H3>
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<UL>
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<LI><A href="http://incubator.apache.org/tuscany/RDB_DAS_white_paper_v-0.2.pdf" class="external-link" rel="nofollow">The Data Access Service: How to access relational data in terms of Service Data Objects</A>, a White Paper</LI>
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</UL>
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<UL>
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<LI><A href="http://java.sys-con.com/read/260053.htm" class="external-link" rel="nofollow">How to access relational data in terms of Service Data Objects</A>, Java Developer Journal Article by Kevin Williams</LI>
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</UL>
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<UL>
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<LI><A href="das-overview.data/RDB-DAS-Overview.pdf">Tuscany DAS Overview </A>, Kevin Williams and Luciano Resende</LI>
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</UL>
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<UL>
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<LI><A href="http://lresende.blogspot.com/" class="external-link" rel="nofollow">Luciano's blog on SDO/DAS and other SOA technologies</A></LI>
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</UL>
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<UL>
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<LI><A href="das-overview.data/das-data-services-v01.pdf">Data Service and SCA</A>, Luciano Resende</LI>
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</UL>
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</TD></TR></TBODY></TABLE>
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Copyright <20> 2003-2012, The Apache Software Foundation </BR>
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Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation.
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