Membuat Index Unique Single Field `db.collection.createIndex( <key and index type specification>, { unique: true } )` Contoh `db.members.createIndex( { “user_id”: 1 }, { unique: true } )` Drop Index…
Membuat Index Unique Single Field `db.collection.createIndex( <key and index type specification>, { unique: true } )` Contoh `db.members.createIndex( { “user_id”: 1 }, { unique: true } )` Drop Index…