Apakah javascript bisa konek ke database?

Menambahkan kemampuan untuk menghubungkan database ke aplikasi Express hanyalah masalah memuat Node.js yang sesuai. js driver untuk database di aplikasi Anda. Dokumen ini secara singkat menjelaskan cara menambahkan dan menggunakan beberapa Node.js yang paling populer. modul js untuk sistem database di aplikasi Express Anda

Driver database ini adalah di antara banyak driver yang tersedia. Untuk opsi lain, cari di situs npm

Cassandra

Modul. cassandra-driver

Instalasi

$ npm install cassandra-driver

Contoh

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Dasar sofa

Modul. sofanode

Instalasi

$ npm install couchbase

Contoh

const couchbase = require('couchbase')
const bucket = (new couchbase.Cluster('http://localhost:8091')).openBucket('bucketName')

// add a document to a bucket
bucket.insert('document-key', { name: 'Matt', shoeSize: 13 }, (err, result) => {
  if (err) {
    console.log(err)
  } else {
    console.log(result)
  }
})

// get all documents with shoe size 13
const n1ql = 'SELECT d.* FROM `bucketName` d WHERE shoeSize = $1'
const query = N1qlQuery.fromString(n1ql)
bucket.query(query, [13], (err, result) => {
  if (err) {
    console.log(err)
  } else {
    console.log(result)
  }
})

CouchDB

Modul. nano

Instalasi

$ npm install nano

Contoh

const nano = require('nano')('http://localhost:5984')
nano.db.create('books')
const books = nano.db.use('books')

// Insert a book document in the books database
books.insert({ name: 'The Art of war' }, null, (err, body) => {
  if (err) {
    console.log(err)
  } else {
    console.log(body)
  }
})

// Get a list of all books
books.list((err, body) => {
  if (err) {
    console.log(err)
  } else {
    console.log(body.rows)
  }
})

LevelDB

Modul. naik tingkat

Instalasi

$ npm install level levelup leveldown

Contoh

const levelup = require('levelup')
const db = levelup('./mydb')

db.put('name', 'LevelUP', (err) => {
  if (err) return console.log('Ooops!', err)

  db.get('name', (err, value) => {
    if (err) return console.log('Ooops!', err)

    console.log(`name=${value}`)
  })
})

MySQL

Modul. mysql

Instalasi

$ npm install mysql

Contoh

const mysql = require('mysql')
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'dbuser',
  password: 's3kreee7',
  database: 'my_db'
})

connection.connect()

connection.query('SELECT 1 + 1 AS solution', (err, rows, fields) => {
  if (err) throw err

  console.log('The solution is: ', rows[0].solution)
})

connection.end()

MongoDB

Modul. mongodb

Instalasi

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Contoh (v2. *)

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Contoh (v3. *)

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Jika Anda menginginkan driver model objek untuk MongoDB, lihat Mongoose

Neo4j

Modul. neo4j-driver

Instalasi

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Contoh

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Peramal

Modul. oracledb

Instalasi

CATATAN.

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Contoh

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

PostgreSQL

Modul. pg-janji

Instalasi

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Contoh

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Redis

Modul. redis

Instalasi

const cassandra = require('cassandra-driver')
const client = new cassandra.Client({ contactPoints: ['localhost'] })

client.execute('select key from system.local', (err, result) => {
  if (err) throw err
  console.log(result.rows[0])
})

Contoh

$ npm install couchbase

Server SQL

Modul. membosankan

Instalasi

$ npm install couchbase

Contoh

$ npm install couchbase

SQLite

Modul. sqlite3

Instalasi

$ npm install couchbase

Contoh

$ npm install couchbase

Pencarian elastis

Modul. elasticsearch

Instalasi

$ npm install couchbase

Contoh

$ npm install couchbase

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