As injections go, SQL Injection (SQLI) is the belle of the ball. While differences exist between SQL database technologies, most subscribe to a common foundation of syntax (defined by the American National Standards Institute (ANSI), vocabulary and organization, which makes learning and adapting to a new one straightforward and efficient. Used in relational databases, it is the workhorse in modern database operations, responsible for storing, manipulating, and querying databases from adjacent applications or interfaces. There are a lot of free resources that are worth digging into to better understand SQL, and the World Wide Web Consortium's site (https://www.w3schools.com/sql/) is a fantastic start – we won't go into any depth on the underlying language.
Statistically speaking, over 98% of web applications are backed by databases containing the...