MongoDB Collections

A collection in MongoDB is similar to a table in RDBMS. MongoDB collections do not enforce schemas. Each MongoDB collection can have multiple documents. A document is equilant to row in a table in RDBMS.

To create a collection, use the db.createCollection() command. The following creates a new employees collection in the current database, which is humanResourceDB database created in the previous chapter.

Above, the employees collection is created using the creatCollection() method. It returns an object { ok: 1 }, which indicates the collection was created successfully.

As mentioned above, a single database can have multiple collections. The following creates multiple collections.

Use the show collections commands to list all the collections in a database.

To delete a collection, use the db.<collection-name>.drop() method.

Create Collection in MongoDB Compass

To create a new collection using MongoDB Compass, connect compass to your server and select the database.

Click on the "Create Collection" button to create a new collection, as shown below.

Enter the name of a collection, check appropriate checkbox and click on the Create Collection button to create it.

Thus, you can create a new collection using MongoDB Shell mongosh or MongoDB Compass.