I am migrating a mysql database to mongodb. But i have read in MongoDb data types and then there is no reference to floating point types like, float, double, decimal.
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MongoDB does support storing doubles, but not all drivers provide an interface to them for some reason.
From http://www.mongodb.org/display/DOCS/Data+Types+and+Conventions -
Mongo uses special data types in addition to the basic JSON types of string, integer, boolean, double, null, array, and object.