Save empty fields in the database or not?

Question

MongoDB

Here is my essence. It has 2 required fields and 10 optional fields.
The question is in general in the title, to keep the minimum number of fields or is it better to keep everything empty?

Please tell me, DB gurus ^_^

PS I'm generally a noob in the DB if that)

Answer 1

In Monge, you don’t need to store empty fields, unlike relational (SQL) databases