create collection in mongodb code example

Example 1: mongodb create collection

db.createCollection( <name>,
   {
     capped: <boolean>,
     autoIndexId: <boolean>,
     size: <number>,
     max: <number>,
     storageEngine: <document>,
     validator: <document>,
     validationLevel: <string>,
     validationAction: <string>,
     indexOptionDefaults: <document>,
     viewOn: <string>,              // Added in MongoDB 3.4
     pipeline: <pipeline>,          // Added in MongoDB 3.4
     collation: <document>,         // Added in MongoDB 3.4
     writeConcern: <document>
   }
)

Example 2: create collection in mongodb stack overflow

> use testdb
switched to db testdb
> db.createCollection("testcollection")
{ "ok" : 1 }
> db.getCollectionNames()
[ "system.indexes", "testcollection" ]
>

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