Policy-base Management is a new feature in SQL Server 2008 that helps SQL Server administration. It allows Database Administrators to manage SQL Server instances by intent through clearly defined policies, thus reducing the potential for administrative errors. The policy-based framework implements the policies behind the scene with a Policy Engine, SQL Server Agent jobs, SQLCLR, DDL triggers and Service Broker. Policies can be applied or evaluated against a single server or a group of servers, thus improving the scalability of monitoring and administration.
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