The attacker sends unauthorized commands directly to a database in case of an SQL Injection attack. SQL Injection (SQLi) is a kind of injection attack that forms it conceivable to execute wicked SQL statements. These statements manage a database server following a web application. Attackers can utilize SQL Injection vulnerabilities to avoid application security standards. They can go through authentication and support of a web application or web page and recover the content of the whole SQL database. They can also manage SQL Injection to add, alter, and delete data in the database.