[Solved] Which of the following is the correct way to represent a hold object in a reservation system? - Ans: Hold { hold_id: string, item_id: string, user_id: string, expiry_time: datetime... | LLD

LLD - Design — Library Management System

Which of the following is the correct way to represent a hold object in a reservation system?

AHold { hold_id: string, item_id: string, user_id: string, expiry_time: datetime }

BHold { item_name: string, price: float, quantity: int }

CHold { user_name: string, payment_status: boolean }

DHold { reservation_date: datetime, confirmation_code: string }

Step-by-Step Solution

Solution:

Step 1: Identify necessary hold fields
A hold needs an ID, the item it blocks, the user who holds it, and expiry time.
Step 2: Match fields to options
Hold { hold_id: string, item_id: string, user_id: string, expiry_time: datetime } correctly includes hold_id, item_id, user_id, and expiry_time.
Final Answer:
Hold { hold_id: string, item_id: string, user_id: string, expiry_time: datetime } -> Option A
Quick Check:
Hold object fields = ID, item, user, expiry [OK]

Quick Trick: Hold object must track expiry and user info [OK]

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Which of the following is the correct way to represent a hold object in a reservation system?