Lessons 11-15 | Full-Stack Module
Databases: Store Data Permanently
Use SQLite to understand tables, records, and persistence without adding unnecessary infrastructure.
Lesson 1440 mincourse modulepaid enrollment
Learning objective
Understand tables, rows, basic queries, and persistence.
Lab outcome
Store and retrieve leaderboard records with SQLite.
Module milestone
Build a small full-stack leaderboard with persistent data.
Phase 1
Mission briefing
Before You Study (5 mins)
Lesson focus: Variables in code forget everything when the computer turns off. Databases never forget. We will use SQLite, a database that lives in a single file. Zero setup, infinite memory.
What you should have ready:
- Your Express server
-
sqlite3installed (we'll do this)
Quick Concepts
| Term | Simple Meaning |
|---|---|
| Database (DB) | A digital filing cabinet |
| Table | A specific drawer (e.g., "Scores") |
| Row | A single folder (e.g., "Divyanshu: 100") |
| SQL | The language we use to talk to the DB |
| SQLite | A simple DB that requires no installation |
Think About
Before studying, consider:
- Contact list on your phone = Database.
- Instagram feed = Database.
- Your bank balance = Database. Everything is a database.
By the End
After this lesson, you'll:
- ✅ Create your first Database table
- ✅ Save a score permanently
- ✅ Retrieve scores even after restarting the computer!
Never forget! 💾