How does SQL engine work?
- How does a SQL compiler work?
- How does query engine work?
- How does SQL work internally?
- What does a database engine do?
How does a SQL compiler work?
Every SQL database engine contain two main components Compiler and Virtual machine to execute the queries. The compiler read the query and convert that query to appropriate byte code, then that byte code evaluated by the virtual machine and a proper response given back to the client.
How does query engine work?
At a high level, a query engine is a piece of software that sits on top of a database or server and executes queries against data in that database or server to provide answers for users or applications. More specifically, a SQL query engine interprets SQL commands and language to access data in relational systems.
How does SQL work internally?
SQL Query mainly works in three phases . 1) Row filtering - Phase 1: Row filtering - phase 1 are done by FROM, WHERE , GROUP BY , HAVING clause. 2) Column filtering: Columns are filtered by SELECT clause. 3) Row filtering - Phase 2: Row filtering - phase 2 are done by DISTINCT , ORDER BY , LIMIT clause.
What does a database engine do?
A database engine (or storage engine) is the underlying software component that a database management system (DBMS) uses to create, read, update and delete (CRUD) data from a database.
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