Tuscany DAS

RDB DAS provides robust a generic data access service that provides + transformation capability between SDO data graphs and relational databases and + vise versa.

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By using RDB DAS, applications developers avoid the details and complications + of working directly with a relational database and also the complex transformation + between relational rows/columns and Data Object types/properties. +

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RDB DAS works with SDO to improve your data access performance.The RDB DAS + processes the SDO change summary and produces efficient update statements + that only write to columns that have actually been modified. +

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The following diagram illustrates these two capabilities in + a typical client interaction.The client + starts by reading a graph of data specified by some query.The client then makes modifications to the + graph, possibly by adding elements, and then requests the DAS to push the + changes back to the database.

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To further explore the benefits of DAS please refer to white + paper "DAS White Paper: The Data Access Service" on the Documentation + page.

Below, there is a list of various links to documents that help to explain various aspects of the + Tuscany DAS subproject and the programming model that it provides. More general documentation + which applies to the Tuscany project as a whole can be found on the + Tuscany Documentation page. +

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+ Title + + Description +
+ DAS White Paper: The Data Access Service + + How to access relational data in terms of Service Data Objects +
+ JDJ DAS Article + + How to access relational data in terms of Service Data Objects +
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+ Title +	+ Description +
+ DAS White Paper: The Data Access Service +	+ How to access relational data in terms of Service Data Objects +
+ JDJ DAS Article +	+ How to access relational data in terms of Service Data Objects +