/ˌɛs kjuː ˈɛl/
Structured Query Language (SQL), pronounced as /ˌɛs kjuː ˈɛl/, is a domain-specific language used to manage and manipulate relational databases. Developed in the 1970s by IBM researchers Donald D. Chamberlin and Raymond F. Boyce, SQL has become the standard language for interacting with relational database management systems (RDBMS).