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A data retrieval service implements a new data-binding technology that enables data consumers and data sources to communicate with each other through Simple Object Access Protocol (SOAP) and Extensible Markup Language (XML). A data retrieval service is a Web service that returns XML data from different data sources or manipulates data against those data sources. A data retrieval service is installed and runs on a server running Microsoft Windows SharePoint Services. Windows SharePoint Services includes a default set of data retrieval services for working with data in SharePoint lists, OLEDB, and XML data sources. Client applications, and data-bound Web Parts, such as the Spreadsheet Web Part, can use a data provider service to query the data source supported by the particular data source.
You can allow or disallow data retrieval services and configure settings for data retrieval services by using the SharePoint Central Administration page.
Note If your data retrieval service is attempting to connect to a remote Microsoft SQL Server database that is configured to use Microsoft Windows authentication, the server with the data retrieval service, the remote server running SQL Server, and the client initially making the request against the data retrieval service must be using Kerberos authentication. For more information about setting up Kerberos authentication, see the Help system for Internet Information Services (IIS) 6.0.