Components of the SQL Server engine
Figure 1-2 shows the general architecture of SQL Server and its four major components: the protocol layer, the query processor (also called the relational engine), the storage engine, and the SQLOS. Every batch submitted to SQL Server for execution, from any client application, must interact with these four components. (For simplicity, some minor omissions and simplifications have been made and certain “helper” modules have been ignored among the subcomponents.)
Figure 1-2. The major components of the SQL Server Database Engine.
The protocol layer receives the request and translates it into a form that the relational ...
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