SQL Server Internals
Crafted for the love ♥ of SQL Server
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SQL SERVER
STORAGE ENGINE
RELATIONAL ENGINE
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Our focus in this presentation will be the
Relational Engine
SQL SERVER RELATIONAL ENGINE
SQL Manager is the component at the heart
of SQL Server
SQL Manager
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T-SQL Execution
Query Execution
Open Data Services (ODS)Passes the query results to ODS for formatting it
into TDS messages
SQL Manager
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T-SQL Execution
Query Execution
Open Data Services (ODS)
Does stuff like mathematical calculations,
filtering
SQL Manager
Expression Service
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T-SQL Execution
Query Execution
Open Data Services (ODS)
Handles * Data definition statements like CREATE VIEW
* System tables This is more a part of the Storage Engine, than the Relational Engine
SQL Manager
Expression Service
Catalog Services
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T-SQL Execution
Query Execution
Open Data Services (ODS)
* SQL Server scheduler * Assigns fibers and threads * Helps SQL Server load balance * Helps prevent thrashing
SQL Manager
Expression Service
Catalog Services User Mode Scheduler (UMS)
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Happy DBA’ing!
See you soon with another interesting crucial SQL Server concept!
Until then …
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http://www.sqlserverapp.com/
Referenced from https://msdn.microsoft.com/en-us/library/
aa226174(v=sql.70).aspx
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