String
Sting is the most common used data-type to store the data. String in mongoDB must be UTF-8 valid.
Integer
Use to store a numerical value. Integer can be 32 bit or 64 bit depending upon your server.
Boolean
Use to store a Boolean (true/ false) value.
Double
Use to store floating point values.
Symbol
This data-type is used identically to a string however, it's generally reserved for languages that use a specific symbol type.
Date
Use to store the current date or time in UNIX time format. You can specify your own date time by creating object of Date and passing day, month, year into it.
Object ID
Use to store the document’s ID.
Binary data
Use to store binary data.
Code
Use to store JavaScript code into document.
Regular expression
Use to store regular expression
Min/ Max keys
This type is used to compare a value against the lowest and highest BSON elements.
Arrays
Use to store arrays or list or multiple values into one key.
Timestamp
This can be handy for recording when a document has been modified or added.
Object
This data-type is used for embedded documents.
Null
This type is used to store a Null value.
