5.1. SQL About

SQL

Structured Query Language

Domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS). It is particularly useful in handling structured data, i.e. data incorporating relations among entities and variables. [#WikipediaSQL]_ [#RFC6922]_

SELECT

SQL language operation to retrieve data from the database

INSERT

SQL language operation to put data to the database

UPDATE

SQL language operation to modify data in the database

JOIN

SQL language operation to retrieve data from the database from multiple tables and merge them