import time def raiseIndexError(): raise IndexError def raiseZeroDivisionErrorWithMessage (message:str): raise ZeroDivisionError(message) def raise This Exception (exception): raise exception def catchAndReturnMessage (message: str, main_function: callable) →> str: try: main_function() except Exception as e: return str(e) else: return message def catchCleanupAnd Throw (main_supplier: callable, index_supplier: callable, zero_supplier: callable, cleanup: callable) -> str: try: result = main_supplier() except IndexError: result = index_supplier() except ZeroDivisionError: result = zero_supplier() finally: cleanup() return result class Timer: definit__(self, time_out:int): self.time_out= time_out self.start_time = None self.end_time = None def get_total_time(self): if self.end_time == None: return -1 return self.end_time- self.start_time def _enter_(self): self.start_time = int(round(time.time()* 1000)) return self def_exit_(self, exc_type, exc_value, traceback): self.end_time = time.time() if self.get_total_time() > self.time_out: raise TimeoutError

import time def raiseIndexError(): raise IndexError def raiseZeroDivisionErrorWithMessage (message:str): raise ZeroDivisionError(message) def raise This Exception (exception): raise exception def catchAndReturnMessage (message: str, main_function: callable) →> str: try: main_function() except Exception as e: return str(e) else: return message def catchCleanupAnd Throw (main_supplier: callable, index_supplier: callable, zero_supplier: callable, cleanup: callable) -> str: try: result = main_supplier() except IndexError: result = index_supplier() except ZeroDivisionError: result = zero_supplier() finally: cleanup() return result class Timer: definit__(self, time_out:int): self.time_out= time_out self.start_time = None self.end_time = None def get_total_time(self): if self.end_time == None: return -1 return self.end_time- self.start_time def _enter_(self): self.start_time = int(round(time.time()* 1000)) return self def_exit_(self, exc_type, exc_value, traceback): self.end_time = time.time() if self.get_total_time() > self.time_out: raise TimeoutError

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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