Structured Query Language (SQL) is a programming language used to interact with database. Database contains sensitive information that is store in servers at different places. Here is the problem that if server contains the personal information of clients or customers such as credit card details, account login details and some other distinguishable information which can be targeted by attackers using SQL injection. Basically this means that SQLi is a type of cybersecurity attack that aims the databases with the help of particularly crafted SQL statements to manipulate the systems into doing unpredicted and unwanted things.