생성 - createIndex()

https://docs.mongodb.com/manual/reference/method/db.collection.createIndex/

db.products.createIndex({ product_code: 1 }, { name: 'product_code_1' })

확인 - getIndexSpec()

db.products.getIndexSpec();
/*
[
    {
        "v": 1,
        "key": {
            "product_code": 1
        },
        "ns": "jongpak.products",
        "name": "product_code_1"
    }
]
*/

삭제 - dropIndex()

db.products.dropIndex("product_code_1");