db.test1.insertOne(
   {
      "StudentId" :1,
      "StudentName" : "Joseph Connor"
   }
)

db.test1.find()

db.test1.insertOne

// remove tinker
show dbs

db.dropDatabase()
show dbs

use tinker
// create index
db.test1.createIndex( { "StudentId": 1 }, { unique: true } )
doc = {
      "StudentId" :1,
      "StudentName" : "Joseph Connor"
}
doc
db.test1.insertOne(doc)
db.test1.insertOne(doc)

doc2 = {
      "StudentId" :2,
      "StudentName" : "Susan Connor"
}
db.test1.insertOne(doc2)

db.test1.insertMany([
   {   "StudentId" :5,
      "GPA": 3.72
   },
   {   "StudentId" :3,
      "GPA": 1.69,
      "x": "whatever will be, will be"
   },
   {
      "BCAssetId": "78c22fc6-5dec-11ec-bf63-0242ac130002",
      "BCAssetType": "BCAssetTypeMetadata",
      "BCAssetName": "BCAssetTypeMetadata: MBSEModel",
      "ForBCAssetType": "MBSEModel",
      "Version": {
         "Version": "1.0",
         "Subversion": null,
         "StartTime": "2019-01-13T07:23:13+06:00"
      }
   }
])
db.test1.find()


use toyu
db.student.find()

// Show all information of students majoring in 'CINF'.

// db.collection.find(query: {"major": "CINF"}, projection: { "_id": 0 }, options)
db.student.find({"major": "CINF"},
    { "_id": 0 }
)

db.student.find({"major": "CINF"})

db.student.find({"major": "CINF"},
    { "_id": false }
)