Before we see what SQL Injection is. We should know what SQL and Database are. Database: Database is collection of data. In website point of view, database is used for storing user ids,passwords,web page details and more. Some List of Database are: * DB servers, * MySQL(Open source), * MSSQL, * MS-ACCESS, * Oracle, * Postgre SQL(open source), * SQLite, SQL: Structured Query Language is Known as S