SQL-introduction 📑
🎯 Objectives
- Learn how ro connect a website with a database
- Explore SQL Basics
- Further develop research skills
✔️ Specifications
- Create a mySQL Database
🌱 Must-haves
1️⃣ Set-up
- Install a database: MySQL (or MariaDB, but never both) This is included in your all in one pack you installed previously (Apache, MySQL, PHP).
- Install a database manager
- 🍎/🐧/🎤 PhpMyAdmin: runs in the browser for easy access, but never to be used in production (security concern).
- 🍎/🐧/🎤 Datagrip
- 🍎/🎤 TablePlus: good interface, limited open tabs in the free version.
- 🍎 SequelAce: successor to SequelPro.
- 🎤 HeidiSQL
2️⃣ Create a database: SQL-introduction
Make the following tables and populate them with some dummy data (have at least two entries for every table)
- groups: id, name, location, start_date, max_participants
- learners: id, name, email, active
- coaches: id, name
3️⃣ Execute the following commands
- Get all data from the groups database
- Get the name and email of the first learner, and alias the name to learner_name
- Update the start date of the first_group (make it two months later)
- Introduce a new field status which can contain a long text indicating the reason for postponing (bonus points if it's a creative one).
- Delete someone from the learners table as they've decided to become an astronaut.
🌻 Nice-to-haves
1️⃣ Try these more advanced commands
- Find a technique to make the connection in the database between learner, group and coach
- Select a coach and all related groups
- Select a coach, all related groups and also the learners who are still active.
💐 Extra nice-to-haves
- Run your SQL commands from PHP, by connectin PHP to the database first.