Day 11 : Drop Collection in MongoDB

1. Create database in mongodb
2. Create collection in mongodb
3. Create document in mongodb
4. query document in mongodb
5. update document in mongodb
6. Projections in mongodb
7. Sort records in mongodb
8. Delete document in mongodb
9. drop collection in mongodb
10. drop database in mongodb

In this part of the Learn Mongo Series, we will learn how to drop a collection in mongodb. We will drop the details collection from the database.

We can drop a collection using the db.collection.drop() command. The syntax is db.<Collection_name>.drop() . Let's start dropping collections.

• Step 1 - List the collections: firstly list all the collections using the show collections command as shown below :
  
  

  										
  >use students
  switched to db students
  > show collections
  name
  roll
  details
  rollNumber
  system.indexes
  >
  										
  									

  
  
• Step 2 - Drop the collection: We can drop the collection using db.collection.drop() command. We are deleting the details collection from students db as shown below :
  
  

  										
  >db.details.drop()
  true
  >
  										
  									

  
  
• Step 3 - List collections again : List all the collections again to check the successful deletion of details collection as shown below :
  
  

  										
  > show collections
  name
  roll
  rollNumber
  system.indexes
  >
  										
  									

  
  
Hurray !! Mission Accomplished. We have successfully deleted the mongodb collection.

In this part of learn mongo series , we learned about how we can drop a collection in mongodb. We learned the following commands of mongodb :

1. use : This command is use to either create a new database or switch to an already existing database.
2. show collections : This command is used to list all the collections available in the mongodb databases on the console.
3. db.<Collection_name>.drop() : This command is used to drop the collection.