How Do SQL Database Engines Work?

Othmaniamir
2 min readJul 13, 2021

1)Introduction

SQL engine is defined as software that recognizes and interprets SQL commands to access a relational database and interrogate data. SQL engine is also commonly referred to as a SQL database engine or a SQL query engine.

2)Explanation

A typical SQL server database engine configuration includes a storage engine and the query processor. Different SQL engine types support different SQL server database engine architectures, but in general the SQL engine is a component of the system that is used to create, read, update and delete (CRUD) data from a database. Enterprises use SQL server database engines to create relational databases for online transaction processing (OLTP) and online analytical processing (OLAP).

Most SQL engines support standard SQL, and many database management systems (DBMS) also offer application programming interfaces (APIs) to access database tools beyond the actual database user interface. For example, OmniSci supports a visualization API called OpenGL as part of the OmniSci Immerse platform to process visual analytics from big data.

SQL engines are often proprietary architecture designs that offer unique capabilities for storing and querying data within a relational database system. Each database instance supports various APIs, programming languages, partitioning methods, capabilities and more.

3)Exemples: 8 Popular Databases

  1. Oracle 12c
  2. MySQL
  3. Microsoft SQL Server
  4. PostgreSQL
  5. MongoDB
  6. MariaDB
  7. DB2
  8. SAP HANA

4)Diagram

The Database Designer is a visual tool that allows you to design and visualize a database to which you are connected. When designing a database, you can use Database Designer to create, edit, or delete tables, columns, keys, indexes, relationships, and constraints. To visualize a database, you can create one or more diagrams illustrating some or all of the tables, columns, keys, and relationships in it.

5)Conclusion

The SQL database engine is a crucial tool to have in almost any database environment. It is built with low-level programming languages and has its own stages for compiling and executing. It selects the best algorithms by comparing it to alternatives and creates tables by using binary trees. People can use different platforms all with different code and have them all connected to a SQL database engine. SQL allows for sharing and taking care of the data with a well-defined schema, automatic algorithm selection, automatic index maintenance, and fixing performance problems without have to recode and retest.

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