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SQL Server Architecture

The Main Components of the SQL Architecture are




NETWORK LIBRARY, provide connectivity between the client and the server process.(Client request come to  SQLserver via NL)
DATABASE ENGINE, is the server process that sits at the heart if a SQL Server System(RDBMS). Its logically divided as Relational Engine and the Storage Engine.
RELATIONAL ENGINE: RE provides the functionality that control query execution(the request is parsed, optimised and executed)
OLE-DB Request is passed to the storage engine
STORAGE ENGINE- SE pass the IO request to OS.(Storage Engine manages the access and modification of data. Transaction manager, Page Manager, Access methods, Lock manager, File/Device Manager, Buffer, log, sort manager and Utilities)

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