Introduction to SQL and relational databases

About

The biggest asset of today's companies is their data, and data that is mostly stored in online relational databases.

Virtually all relational database management systems in use today use SQL as a tool for manipulating and querying the data they contain.

SQL language is an international standard that allows, in a simple way, powerful data extraction and summarization queries to be performed with very few commands.

If you want to make a career in business intelligence, web application programming or any other activity that requires querying or updating data, mastering SQL is a basic requirement.

In this course we will teach you the basic concepts needed to manage a database and we will introduce you gradually and practically to the use of SQL, starting with the simple query to get all the data stored in a table and ending with complex queries able to summarize the data contained in several related tables, queries that you will be able to replicate in a SQL emulator in the cloud during the course.

What you will learn

Basic concepts of databases and relational databases such as table, record, field, relation, primary key or secondary key.

* Use of the SELECT command with the WHERE clause and various tools such as IN, BETWEEN or LIKE to query databases using string and range patterns.

* The SQL commands for creating, changing and deleting tables and databases: CREATE, ALTER and DROP

* The SQL commands for modifying the contents of database tables: INSERT, UPDATE and DELETE.

* How to group and sort the results of a SQL query with ORDER BY, GROUP BY and how to summarize them with functions such as SUM, AVG, MAX or MIN.

* How to perform complex queries that return the results of several tables with JOIN and UNION

Skills you learn

• Data Extraction
• SQL (Programming Language)
• Emulators
• International Standards
• Relational Databases
• Relational Database Management Systems
• Business Software
• Business Intelligence

Auto Summary

Dive into the world of SQL and relational databases with this foundational course, ideal for aspiring business intelligence professionals and web application developers. You will learn essential database management concepts and progressively master SQL for data querying and updates. Taught by experts at edX, this engaging course offers practical experience using a cloud-based SQL emulator. Perfect for beginners aiming to harness the power of data in IT and computer science. Available with a Starter subscription.