MongoDB Project and Update
Project only name and address of employee by name ram
Project only name and address of all employees.
Suppress id field of all employees in display
Display the marks scored by ram
Update address from goa to delhi for the person with the name mohan in the employee collection
Update address as pune for all employees who get a salary greater than 10000
Replace a document with replaceOne
Inserting an null value for a field in the employee collection
Displaying all the employees whose address field contains null value
Quering for null using type