Essential SQL: Querying Data and Database Basics โ€” WalkSelf
โฑ 2h 48m ๐Ÿ“š 28 lessons ๐ŸŽง Audio version

Essential SQL: Querying Data and Database Basics

Learn the core concepts of relational databases and master the foundational SQL commands required to retrieve and manipulate data efficiently.

  • ๐Ÿ’ฌ AI instructor
    Ask about any lesson and get a clear answer instantly, anytime.
  • ๐Ÿ• Start anytime
    No schedules or deadlines โ€” learn at your own pace, whenever suits you.
  • ๐ŸŒ In English
    Lessons, tasks and certificate โ€” all fully in your language.

About this course

Do you need to understand how data is organized and stored, or how to pull specific information from large datasets? Learning SQL and database fundamentals is the essential first step for any technical career path. This course provides a solid theoretical foundation in relational databases coupled with practical experience writing SQL queries. By the end, you will be able to design simple data structures, manage table relationships, and execute precise retrieval commands to answer data questions. What you'll learn: * Understand the core concepts of relational database management systems (RDBMS) and basic data modeling principles. * Master fundamental SQL data retrieval using SELECT, WHERE, ORDER BY, and basic aggregation functions. * Practice building and managing table structures by defining primary and foreign key relationships. * Apply Data Manipulation Language (DML) commands like INSERT, UPDATE, and DELETE to manage database content. * Learn how to join multiple tables to query complex, related datasets effectively. We begin with defining key database terminology and data types, moving quickly into practical exercises focused on writing functional SQL queries. The material emphasizes hands-on practice through written examples and guided application of DML and DDL commands. This course is designed for absolute beginners, students, or anyone starting their journey into programming or data analysis. No prior knowledge of databases or coding is required. Start building your foundational data skills today.

What you'll get

  • ๐Ÿ“œ Certificate of completion
    Add it to your LinkedIn profile
  • ๐Ÿ’ฌ Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • ๐ŸŽง Audio version included
    Learn on the go โ€” no screen needed
  • โ™พ๏ธ Lifetime access
    Come back anytime, no expiry
  • ๐Ÿ“ฑ Phone or computer
    Works anywhere, any device
  • ๐Ÿ’ธ 14-day refund
    No questions asked
  • โšก Short & focused
    2h 48m of practical content

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We donโ€™t store card details โ€” Stripe handles them securely.

Can I get a refund? +

Yes โ€” full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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