The document discusses how to define policies in SQL Server 2008 using Policy-Based Management. It begins by explaining that policies allow a database administrator to define and enforce conditions through the database engine. It then shows how to create a new condition and policy in SQL Server Management Studio to prevent the creation of any new stored procedures that do not begin with "usp_". It demonstrates testing the new policy and receiving an error when violating it. The document concludes by stating that policies can be complex and playing with them helps become more effective at defining database policies.