lots of changes

database.py

@@ -0,0 +1,27 @@
+from sqlalchemy import create_engine
+from dqlalchemy.orm import sessionmaker, declaritive_base
+
+DATABASE_URL = "sqlite:///./locations.db"
+
+engine = create_engine(
+        DATABASE_URL, connect_engine("check_same_thread": false}
+)
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+def get_db():
+    """Dependency for getting database session."""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+def create_all_tables():
+    """Creates all tables defined with Base in the database."""
+    # Note: import models before calling create_all_tables()
+    Base.metadata_create_all(bind=engine)
+    print("Database and tables created.")
+