Query This MongoDB Database on Linux

Start the mongo shell from the Bash prompt:

mongo

Once in the interactive mongo shell, create a new database:

use demo;

Insert the data into a new collection in our demo database:

db.inventory.insertMany([
    { id: 0, name: "David", department: "Engineering", expensecode: 200 },
    { id: 1, name: "Clay", department: "HR", expensecode: 100 },
    { id: 2, name: "Sue", department: "Sales", expensecode: 300 },
    { id: 3, name: "Betty", department: "Marketing", expensecode: 400 },
])

Query the database for all documents:

db.inventory.find( {} )

Update the department to be HR for the document with a name of Betty, and confirm:

db.inventory.updateOne(
    { name: "Betty" },
    { 
      $set: { department: "HR" } 
    }
)

db.inventory.find( { name: "Betty" } )