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Data Engineering · TAMIL-FIRST LEARNING

Database & SQL Fundamentals

Learn what databases are, how records and keys connect, the difference between SQL and NoSQL, and an introduction to SQL.

Beginner2 hrsOnline self-paced

COURSE FOCUSA relationship and query you can explain.

FREE COURSE ACCESSStart Learning FreeExplore the course sections
STRUCTUREDClear learning progression
PRACTICALApplied explanations
RESPONSIBLEHuman-validated learning

MEANINGFUL COURSE EXAMPLE

Explain how two tables connect

As independent practice, sketch two related tables and identify the keys before writing a simple query.

WHERE THIS SKILL FITS

See where this skill fits—and what employers expect next.

Big-data specialists and data engineering roles remain central because reliable AI and analytics depend on trusted, well-operated data.
SKILL CONTEXTData remains the foundation for AI
RELATED ROLE DIRECTIONSRoles where this foundation can contribute
01Data engineer
02Analytics engineer
03Database developer
WHAT TO PRACTISE BEYOND A COURSE
Model and query dataBuild reliable transformationsCheck quality and lineageOperate batch or real-time pipelines

YOUR NEXT PROOFPublish one documented pipeline or SQL analysis with inputs, quality checks and a validated output.

These are possible directions, not a job guarantee. Check current role requirements and build practical evidence alongside the course.

COURSE SECTIONS

Follow the course sections.

These section names follow the current public course outline. Open the course for the latest lesson list.
SECTION 01

What is Database?

  • Why applications store and organise data
SECTION 02

Database Structure

  • Tables and how records are organised
SECTION 03

Primary Key vs Foreign Key

  • How records are identified and linked
SECTION 04

SQL vs NoSQL

  • Compare two ways to organise data
SECTION 05

What is SQL

  • Begin asking questions of stored data

HOW TO PRACTISE

Use a small example to check your understanding.

1
START HERE

Understand records

Choose a small task related to the topic.

2
TRY NEXT

Identify structure

Follow the idea and write down what happens.

3
TRY NEXT

Compare keys

Try the next step yourself.

4
REVIEW

Ask with SQL

Check your result and explain what you would change.

WHO THIS COURSE IS FOR

Is this the right course for you?

Check the audience, level and course preview before you enroll.
Aspiring data engineersAI and analytics learnersDevelopers expanding into dataStudents and freshers

READY TO BEGIN?

See the lessons and decide your next step.

Review the current lessons, access options and course details before you enrol.
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