AvailableFree

Micro-course · Complete beginner

Why does SQL exist?

Understand why companies use databases, then write your first query to solve a real problem.

35 to 45 minCommon SQL · PostgreSQL in the simulator5 lessons · 5 activities available
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Free 30-day beta access · no payment · progress saved

The business problem

Customer, order, payment and stock files tell different versions of the same activity.

What you will be able to do

Recognise when a relational database is useful and answer a first business question with SQL.

  • Identify the limits of uncoordinated sources
  • Distinguish database, DBMS, server and SQL language
  • Understand tables, keys, relationships and constraints
  • Connect a business need to a SQL capability
  • Run and adapt a first real query

Scope of this micro-course

This micro-course targets one focused skill. It does not replace a complete path or server administration training.

Prerequisites

  • No prerequisite
  • A recent browser for SQL practice

Project and practice

5 verified exercises are available. Validation is based on the programme exercises.

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