What is SQL? Structured Query Language is also known as SQL is the database language and is one of the most famous and in-demand technology. This language was specially developed for database management i.e. creating a database, inserting and updating records in them, managing accesses and retrieving data from it. SQL is mostly used for Relational Database Management Systems. Its demand is increasing every single day. As there is an increase in data, demand and need for SQL increases. It is been used by web developers, data analysts, data engineers, and in every other field where we need to store and retrieve data. One of the main reasons why SQL is gaining popularity is that it is simple, easy, quick, and powerful. Another reason is that the most commonly used version of SQL(MySQL) is open-source(FREE) Another great feature of SQL is Non Procedural language(explained in the next section).