MongoDB kolleksiya yaratish
MongoDB-dagi to‘plam (collection) MySQL-dagi jadval bilan bir xil.
To‘plam yaratish
MongoDB-da set yaratish uchun createCollection() usulidan foydalaning:
Misol
"customers" deb nomlangan to‘plam yarating:
let MongoClient = require('mongodb').MongoClient;
let url = "mongodb://localhost:27017/";
MongoClient.connect(url, function(err, db) {
if (err) throw err;
let dbo = db.db("mydb");
dbo.createCollection("customers",
function(err, res) {
if (err) throw err;
console.log("Collection created!");
db.close();
});
});
Misolni ishga tushirish »
Yuqoridagi kodni "demo_mongodb_createcollection.js" nomli faylga saqlang va faylni ishga tushiring:
"demo_mongodb_createcollection.js" ni ishga tushiring
C:\Users\Your Name>node demo_mongodb_createcollection.js
Bu sizga bu natijani beradi:
Collection created!
Muhim: MongoDB-da to‘plam unga ma’lumot kiritilmaguncha yaratilmaydi!
MongoDB to‘plamni yaratishdan oldin hujjat kiritmaguningizcha kutadi.
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