Update free-courses-pt_BR.md (#3297)

free-courses-pt_BR.md

@@ -4,6 +4,7 @@
 * [C](#c)
 * [CSS](#css)
 * [Dart](#dart)
+* [Database](#database)
 * [Delphi](#delphi)
 * [Git](#git)
 * [Go](#go)
@@ -45,6 +46,11 @@
 * [Curso de Dart Lang](https://www.udemy.com/curso-de-dart-lang-completo/) - Sthefane Soares (Udemy)
 
 
+### Database
+
+* [Introdução ao MySQL e phpMyAdmin](https://www.udemy.com/mysql-phpmyadmin/) - Fernando Carmo, Mestres BI (Udemy)
+
+
 ### Delphi
 
 * [Aprenda Delphi e Lazarus do Zero - 100% Gratuito](https://www.udemy.com/aprenda-delphi-e-lazarus-do-zero/) - Marcos Fabricio Rosa (Udemy)