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Microsoft® SharePoint® Foundation 2010 Inside Out by Penelope Coventry Errin O’Connor Troy Lanphier, Johnathan Lightfoot, Thomas Resing, and Michael Doyle

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Using the BCS

The BCS is implemented as a service application. This allows you to create external system definitions once, and not only share those definitions to many sites within the same Site Collection or SharePoint web application, but to share those definitions with more than one web application. In addition, a SharePoint farm—a SharePoint installation that is installed on one or more servers that share the same SharePoint configuration database—can host more than one BCS; each one can be configured independently by different sets of administrators. Also, a BCS on one SharePoint farm, and therefore the external system definitions stored in that farm, can be referenced from another SharePoint farm so that access to external systems can be ...

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