mongoDB コレクション(テーブル)を作成する

db.createCollection('コレクション名');

> db.createCollection('foo');

{ "ok" : 1 }

> show collections

foo

> db.foo.insert({name:'itiro', age:10, gender:'m'});
{
  acknowledged: true,
  insertedIds: { '0': ObjectId("6363748c7c4cb89d6c5c5720") }
}

> db.foo.insert({name:'jiro', age:20, gender:'m'});
{
  acknowledged: true,
  insertedIds: { '0': ObjectId("636374957c4cb89d6c5c5721") }
}

> db.foo.find()

[
  {
    _id: ObjectId("6363748c7c4cb89d6c5c5720"),
    name: 'itiro',
    age: 10,
    gender: 'm'
  },
  {
    _id: ObjectId("636374957c4cb89d6c5c5721"),
    name: 'jiro',
    age: 20,
    gender: 'm'
  }
]