Initial commit - Migrated to Dev environment

backend/app/database.py

@@ -0,0 +1,11 @@
+from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
+from sqlalchemy.orm import DeclarativeBase
+
+# A .env fájlból olvassuk majd, de teszthez:
+DATABASE_URL = "postgresql+asyncpg://user:password@db_container_name:5432/db_name"
+
+engine = create_async_engine(DATABASE_URL, echo=True)
+SessionLocal = async_sessionmaker(autocommit=False, autoflush=False, bind=engine, class_=AsyncSession)
+
+class Base(DeclarativeBase):
+    pass