Documents in MongoDB are JSON-like objects. JSON is a simple representation of data. It supports the following data types:

• null: The null data type is used to represent the null value as well as a value that does not exist:

• boolean: The boolean type is used to represent true and false values:

• number: In MongoDB, the shell default supports 64-bit floating-point numbers. To process long and integer numbers, MongoDB provides NumberLong and NumberInt, which represent 4 bytes and 8 bytes, respectively.
• string: The string data type represents the collection of characters. The MongoDB default supports UTF-* character encoding:

• date: MongoDB stores dates in milliseconds since the epoch. The time zone information is not saved:

• After inserting a date using the preceding way in the document, when we query using find it returns a document with...