Learn SQL languaje easy and free
With this course you will learn everything necessary to become an expert programmer in Databases. You will find courses of ansi SQL (standard language for accessing databases), courses of design of databases, language courses to specific databases such as SQL Server, PL-SQL, and MySQL.
You will learn how to normalize a relational database, perform queries, inserts and updates of tables.(Select, Insert, update, delete,...)
This course has sections for all levels. Tutorials for the beginner and concepts that are more advanced for those who have experience with relational databases.