javascript - Mongodb: Specify field data type, collection _id to be datetime -


i have collection _id objects should datetime.

the collection updated in javascript , performs aggregation specific time. 

  var aggregated = { '_id': new date()};   ... work aggregated ...   updatedb.save(aggregated);

how specify _id object should of type datetime. more generally, how specify field should particular type.

thanks,

you can't.

mongodb schemaless , heterogeneous database. field of document (including _id) can of type. there no way enforce type constraints on database level.


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