added database connection

database/models.py

@@ -0,0 +1,26 @@
+import logging
+import database.connection as connection
+
+logger = logging.getLogger(__name__)
+
+
+class testModel:
+    def getAllUsers():
+        conn = None
+        try:
+            conn = connection.get_db_connection()
+            if not conn:
+                return None
+            
+            cursor = conn.cursor()
+            cursor.execute("SELECT * FROM students");
+            result = cursor.fetchall()
+            cursor.close()
+
+            return result if result else None
+        except Exception as e:
+            logger.error(f"Database query error: {e}")
+            return None
+        finally:
+            if conn:
+                connection.release_db_connection(conn)