Microsoft SQL Server is a relational database management system (RDBMS).
This tag should be used only on questions that are about Objective-C features or depend on code in the language.
R is a free, open-source programming language and software environment for statistical computing, bioinformatics, visualization, and general computing.
React is a JavaScript library for building user interfaces.
MySQL is a free, open source Relational Database Management System (RDBMS) that uses Structured Query Language (SQL).
C is a general-purpose programming language used for system programming (OS and embedded), libraries, games and cross-platform.