Create Operations:

• This operation is used to insert or add new documents in collection.
• It will create a new collection in the database If a collection does not exist.
• In this operation, there are two types of methods provided by MongoDB:

1. 1. collection.insertOne()
   2. collection.insertMany()

Read Operations :

• It is used to query a collection for a document and to retrieve documents from the collection, or in other words.
• In this operation, there is single method provided by MongoDB:

1. 1. collection.find ()

Update Operations :

• It is used to modify or update the existing document in the collection.
• In this operation, there is three types of method provided by MongoDB:

1. 1. collection.updateOne()
   2. collection.updateMany()
   3. collection.replaceOne()

Delete Operations :

• It is used to remove or delete the existing document in the collection.
• In this operation, there are two types of method provided by MongoDB:
  • collection.deleteOne()
  • collection.deleteMany()

For Example,

{_id:

name: “Venkat”,

Age: 36,

Address: {{street: “No-1, southern street”,

           city: “Chennai”,

           state: “Tamil Nadu”,

           zip: “600021”,

           country: “India”}}