Working with SOAP Sessions
This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.
Native XML Web Services in SQL Server enables an instance of SQL Server to be accessed by Web service applications and to operate without the demands of the traditional network connection-based SQL service model. However, because SOAP-based access to SQL Server data over HTTP operates independently of connections, using SOAP sessions can provide an optional extension to HTTP SOAP-based clients for supporting multipart SQL batch processes within the same database connection/session context.