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A course in 3 phases · no experience needed

Database Foundations I

Beginners

Where the world keeps its facts: tables, questions, and answers — how information is stored, found, and trusted. No experience needed — a reading course today, with hands-on labs to come.

Start — Where Facts Live →Nothing ever locks — skip ahead anytime
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Your build

0 of 42 concepts are up. It’s coming along.

01 · The Shelves0/15
02 · The Librarian0/13
03 · The Vault0/14

Phase 01 — The Shelves

7 lessons · 15 concepts
Ready to build
  1. Where Facts LiveYou are hereResume →
    2 concepts to go
  2. Tables, Rows & Columns
    3 concepts
  3. Every Column Has a Type
    2 concepts
  4. The ID Column
    2 concepts
  5. The One-Big-Table Problem
    2 concepts
  6. Linking Tables
    2 concepts
  7. Reading a Schema
    2 concepts

Phase 02 — The Librarian

7 lessons · 13 concepts
Ready to build
  1. What a Query Is
    2 concepts
  2. SELECT and FROM
    2 concepts
  3. Filtering with WHERE
    2 concepts
  4. Sorting & Limiting
    2 concepts
  5. Counting & Grouping
    2 concepts
  6. Questions Across Tables
    2 concepts
  7. From Question to Query
    1 concept

Phase 03 — The Vault

7 lessons · 14 concepts
Ready to build
  1. Changing the Data
    2 concepts
  2. Rules at the Door
    2 concepts
  3. All or Nothing
    2 concepts
  4. The Copy That Saves You
    2 concepts
  5. Who Gets a Key
    2 concepts
  6. When Data Goes Wrong
    2 concepts
  7. The Vault, Complete
    2 concepts

Nothing ever locks. Skip ahead whenever you like — all 21 stops are open from day one, and unbuilt concepts wait on the map until you come back for them.