non-null constraint while insert

[Lambda Daku]

Hi,
I am a newbie to the mongodb. Initially, I would like to thank you for
providing the best database nosql db software to the community, it was
indeed a fun. However, while getting myself acquainted with mongodb I
didn't manage to create a "non-null" constraint on a particular json
attribute. In other words, Is it possible to prevent user/application
from entering a document with the missing attribute?

Thanks
Daku

[Scott Hernandez]

Not really. These types of constraints should be enforced in the application/framework.

In mongodb there is no schema. You can create a unique index, and it will only allow on null for that field, but this is probably not what you want, and just a byproduct of a unique index.

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