Get the knowledge you need in SQL with our free course
In this short module, we'll take a look at how this course's platform works and learn how to get the most out of it. And also get information about our community.
This module is designed to give you a basic understanding of databases and fill in potential gaps. Also in this module, we will get acquainted with the terminology of relational DBMS.
Databases and DBMSDatabase typesRelational databasesKey-value databasesDocument-oriented databasesStructure of relational databasesIntroduction to SQL
Basis of selection I
In this module we will learn how to write our first SQL queries, deal with such important concepts as conditional selection, sorting and data grouping.