Introducing Postgresql for persistance

backend/config.py

@@ -4,7 +4,7 @@ Loads from environment variables and .env file.
 """
 
 from pathlib import Path
-from typing import List
+from typing import List, Optional
 from pydantic_settings import BaseSettings
 import os
 
@@ -20,6 +20,9 @@ class Settings(BaseSettings):
     host: str = "0.0.0.0"
     port: int = 80
     
+    # Database
+    database_url: str = "postgresql://schoolcompare:schoolcompare@localhost:5432/schoolcompare"
+    
     # CORS
     allowed_origins: List[str] = ["https://schoolcompare.co.uk", "http://localhost:8000", "http://localhost:3000"]