Survey on securing a querying process by blocking SQL injection

Web site applications are an important part of our daily life. Hence, attacking those sites increases quick, one of these attacks is SQL injection attack (SQLIA). The SQLIA is a well known way of attack in terms of common threats and document structure nowadays, this attack is launched through specially crafted user inputs and target web applications that used backend databases. Characteristics feature of this attack is, it will change the intended query structure. To avoid this type of attack, the best solution is to do not allow user to enter any part of the SQL query directly. This survey will support the future research and development work as well as to raise the awareness for the presented approaches.