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DataCamp

Introduction to SQL

via DataCamp

Overview

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Learn how to create and query relational databases using SQL in just two hours.

Get an Introduction to SQL in Two Hours


Much of the world's raw data—from electronic medical records to customer transaction histories—lives in organized collections of tables called relational databases. Being able to wrangle and extract data from these databases using SQL is an essential skill within the data industry and in increasing demand.



In just two hours, you'll get to know the theory and the practice through bite-sized videos and interactive exercises where you can put your new-found skills to the test.



Learn how Relational Databases are Organized


SQL is an essential language for building and maintaining relational databases, which opens the door to a range of careers in the data industry and beyond. You’ll start this course by covering data organization, tables, and best practices for database construction.



Write Your First SQL Queries


The second half of this course looks at creating SQL queries for selecting data that you need from your database. You’ll have the chance to practice your querying skills before moving on to customizing and saving your results.



Understand the Difference Between PostgreSQL and SQL Server


PostgreSQL and SQL Server are two of the most popular SQL flavors. You’ll finish off this course by looking at the differences, benefits, and applications of each. By the end of the course, you’ll have some hands-on experience in learning SQL and the grounding to start applying it to projects or continue your learning in a more specialized direction.

Syllabus

  • Relational Databases
    • Before writing any SQL queries, it’s important to understand the underlying data. In this chapter, we’ll discover the role of SQL in creating and querying relational databases. Using a database for a local library, we will explore database and table organization, data types and storage, and best practices for database construction.
  • Querying
    • Learn your first SQL keywords for selecting relevant data from database tables! After practicing querying skills in a database of books, you’ll customize query results using aliasing and save them as views so they can be shared. Finally, you’ll explore the differences between SQL flavors and databases such as PostgreSQL and SQL Server.

Taught by

Izzy Weber

Reviews

4.5 rating, based on 4 Class Central reviews

4.8 rating at DataCamp based on 1803 ratings

Start your review of Introduction to SQL

  • Arshad P S
    The course was easy and very adaptive. It helped me understand the basics of SQL and with the help of the native AI, helped me understand how each command works and for what it was used for.
  • Profile image for SIDDHI DOIPHODE
    SIDDHI DOIPHODE
    I recently completed an in-depth SQL course that covered everything from basic queries to advanced data manipulation and optimization techniques. The course gave me a strong understanding of how to interact with relational databases using commands like SELECT, JOIN, GROUP BY, and subqueries.

    Through hands-on exercises, I learned how to write efficient queries, work with real-world datasets, and apply best practices for database design and performance tuning. This training not only improved my technical skills but also strengthened my ability to solve data-related problems effectively.

  • Mxy
    The speed is good for beginner. but only chapter 1 is free.
    The speed is good for beginner. but only chapter 1 is free.
  • Profile image for Esraa
    Esraa
    it was pretty good for an introduction and very easy .....................................................

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