How to Create MongoDB Collection

If you are interested to learn about the MongoDB Create Database

Create Collection using mongosh

There are 2 ways to create a collection.

Method 1

You can create a collection using the createCollection() database method.



Method 2

You can also create a collection during the insert process.


We are here assuming object is a valid JavaScript object containing post data:


This will create the “posts” collection if it does not already exist. In the command, name is name of collection to be created. Options is a document and is used to specify configuration of collection.

NameStringName of the collection to be created
OptionsDocument(Optional) Specify options about memory size and indexing

Options parameter is optional, so you need to specify only the name of the collection. Following is the list of options you can use −

cappedBoolean(Optional) If true, enables a capped collection. Capped collection is a fixed size collection that automatically overwrites its oldest entries when it reaches its maximum size. If you specify true, you need to specify size parameter also.
autoIndexIdBoolean(Optional) If true, automatically create index on _id field.s Default value is false.
sizenumber(Optional) Specifies a maximum size in bytes for a capped collection. If capped is true, then you need to specify this field also.
maxnumber(Optional) Specifies the maximum number of documents allowed in the capped collection.

While inserting the document, MongoDB first checks size field of capped collection, then it checks max field.

How to Create MongoDB Collection
Show Buttons
Hide Buttons