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MongoDB: PyMongo

infra-mongodb | Level: Easy  | Total Lab Runs: 0 | Premium Lab

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MongoDB is a document-oriented NoSQL database system. A mongodb server is installed in the lab environment (localhost). The objective of this challenge is to interact with the mongodb server using PyMongo python library and answer the following:


  1. List the names of database present on mongodb server? Specify “,” as separator.
  2. List the name of collection present inside database “binary”?
  3. What is the value of flag document?
  4. What is the value of complex number stored in collection “complex” in database “binary”?
  5. What is the name of user who has email “” in current collection in user database?
  6. How many users are present in banned collection in database user?
  7. How many cities are present in collection “city” in database “city” which have a population less than 1000 and belongs to the state “Ohio”?
  8. How many cities are present in collection “city” in database “city” which have a population greater than 15000 and belongs to the state “Ohio”?
  9. What is the name of the 7th user sorted alphabetically in current collection in database users?
  10. What is the average population of state “MA” in collection city in database city (Up to 2 decimal places)?

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