For each place, we need 1,296 Bytes of storage

why such a highly random number? why not just 1.5MB?
Moreover how do we estimate that its going to be 1296 Bytes and not 100 or 500 bytes?

Course: Grokking Modern System Design Interview for Engineers & Managers - Learn Interactively
Lesson: Requirements of Yelp’s Design

Hi Siddharth,

The numbers are merely just assumptions as stated in the lesson as well. These numbers can vary, and yes, 1296 bytes can be 100, 500 bytes, or even 2048. The numbers used are only assumptions and can vary in different scenarios. The lesson aims to ensure the learner understands the concept, as the numbers can vary. In the Design of Yelp lesson, we reflected this size with a relevant database schema as well. Please feel free to reach out if you have any further questions.

Thank you