SQL Guide

SQL is a standard computer language for accessing and manipulating databases.

Commonly used database management systems: MySQL, SQL Server, Access, Oracle, Sybase, and DB2

For those who wish to store data in a database and retrieve data from it, Knowledge of SQL is worth immeasurable value.

SQL Guide syntax

SQL refers to Structured Query Language (Structured Query Language)

SQL enables us to access databases

SQL is an ANSI standard computer language

SQL executes queries against the database

SQL can retrieve data from the database

SQL can insert new records in the database

SQL can delete records from the database< /p>

SQL is easy to learn

SQL Guide example

SELECT LastName FROM Persons