SQL Server Licensing Models

In addition to feature sets, one of the determining factors in choosing a SQL Server edition is cost. With SQL Server 2008, Microsoft provides two types of licensing models: processor-based licensing and server-based licensing.

Processor-based licensing requires a single license for each physical CPU in the machine that is running a Microsoft Server product. This type of license includes unlimited client device access. Additional server licenses, seat licenses, and Internet connector licenses are not required. You must purchase a processor license for each installed processor on the server on which SQL Server 2008 will be installed, even if some processors will not be used for running SQL Server. The only exception ...

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