_id for database

[DesignrKnight]

@riteshsp2000 What say we use the institute roll number as _id. That way linking between collections will be easier with the present data in Excel

[riteshsp2000]

This could help actually. I guess for graphql to get any mentor/mentee we need their id, maintaining _id and rollnumber might be a hassle

[DesignrKnight]

Let us maintain both for scalability later. But for now, we will have value same in both field