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It's basically a mathematical formula that allows you to turn a message into a Hash code by passing the message through the hash function. But unlike encryption, a hash is a bunch of mumbo jumbo but if you use the same hash function, no matter what message you put in, you will always get an output with the same number of characters. If you hashed abc and 123 you might get this bottom result. 45dbaf8529d52c6 3bc4g3a4fb34j5b but they both have the same number of characters.
Movable-type.co.uk/scripts/sha256.html

Well, it's basically the new internet. Web3. 0 describes the third iteration or the third sort of stage of the Web.

Internet 1970.
WEB 1990
Web1.0 1995 it was a read-only web.
Web2.0 2005 became interactive this is your Facebook, your X, your Instagram... The user, interact with them, read and we can also write.
Web3.0 2018 applications on the Blockchain...and this is the dawn of Web 3.0 cryptocurrencies if you think you can predict the future, the this is probably the path to go down. For example, Helium is a really popular web3 project, which is providing wireless internet to out of the way places through individual people hosting their 5G network and owning cryptocurrency or PoolTogether, which lets you participate in no loss lotteries.

Data Persistence: Interface web (accessible via navigateur) ou desktop pour PostgreSQL.
Permet de créer, modifier et gérer :

Bases de données
Tables, vues, fonctions
Utilisateurs et rôles
Inclut un éditeur SQL, un explorateur d’objets, et des outils de sauvegarde/restauration.

API (Application Programming Interface) : Un ensemble de règles permettant à deux applications de communiquer.
Postman : Un outil graphique qui sert à tester, envoyer et automatiser des requêtes HTTP vers une API (GET, POST, PUT, DELETE…).my Own API in khelaf-hanifi.com/dev-api

Axios est une bibliothèque JavaScript qui sert à faire des requêtes HTTP (GET, POST, PUT, DELETE…) depuis le navigateur ou Node.js.

Un input clair, net et précis est le carburant de l’IA.( Clear, precise input is the fuel that powers AI. ).