Ringkasan dokumen tersebut adalah: 1. Membuat database dan tabel untuk proyek e-commerce menggunakan Sequelize ORM 2. Mengonfigurasi file dan dependensi yang dibutuhkan seperti Babel, Nodemon, dan lainnya 3. Menerapkan asosiasi antar tabel untuk melakukan query join

1. E-shopay Study Case
author : kang dian
Principal Trainner

2. Study Case e-shopay
• Buat database dengan nama eshopay
• Create tables dan constraint nya sesuai
erd-diagram disamping
• Format OrderName :
ORD20210921#0002

3. Create RestAPI Step 1
Database
• Create Database
• Create Tables
Add Module
Dependencies
• @babel/runtime :
^7.12.13
• body-parser : ^1.19.0
• cors : ^2.8.5
• compression : ^1.7.4
• cookie-parser : ^1.4.5
• helmet : 3.22.0
• dotenv : ^10.0.0
• sequelize : ^5.21.7
Add module
devDependencies
• nodemon : ^2.0.12
• @babel/core : ^7.12.13
• @babel/node : ^7.12.13
• @babel/plugin-transform-
runtime : ^7.12.15
• @babel/preset-env :
^7.12.13
• sequelize-auto : ^0.8.4
Config Files
• .babelrc
• .env
• Add script start,test &
reverse:db
• Execute reverse:db

4. package.json
{
"name": “02-nodejs",
"version": "1.0.0",
"main": "index.js",
"license": "MIT",
"scripts": {
"start": "nodemon --exec babel-node index.js",
"test": "jest",
"reverse:db": "sequelize-auto -o ./schemas -d eshopay -h localhost -u postgres -p 5432 -x admin -e postgres"
},
"dependencies": {
"@babel/runtime": "^7.12.13",
"body-parser": "^1.19.0",
"compression": "^1.7.4",
"cookie-parser": "^1.4.5",
"cors": "^2.8.5",
"dotenv": "^10.0.0",
"express": "^4.17.1",
"helmet": "3.22.0",
"pg": "^8.7.1",
"sequelize": "^5.21.7"
},
"devDependencies": {
"@babel/core": "^7.12.13",
"@babel/node": "^7.12.13",
"@babel/plugin-transform-runtime": "^7.12.15",
"@babel/preset-env": "^7.12.13",
"nodemon": "^2.0.12",
"sequelize-auto": "^0.8.4"
}
}

5. execute script reverse:db
"reverse:db": "sequelize-auto -o ./schemas -d eshopay -h localhost -u postgres -p 5432 -x admin -e postgres"
folder output
hasil generate
database name user
password dialect
database type
Untuk generate reverse dari table database ke object model gunakan sintak :
yarn reverse:db

6. Sequelize
• Sequelize adalah orm (object relational
mapping) antara table di database dan object
model di nodejs.
• Sequelize memiliki fitur function untuk
melakukan proses DDL & DML.
• Object model akan menyimpan satu record
data table.
• Mempermudah passing parameter & extract
data, karena attribute bisa dibungkus oleh
object model.
Table Category

7. Sequelize Association
• Di database kita bisa melakukan query join,
begitu juga di sequelize, kita bisa melakukan
join menggunakan association.
• Method sequelize adalah abstraction, yaitu
membungkus query native ke dalam bentuk
function js.
• Selain bisa query menggunakan feature
method sequelize, kita juga bisa
menggunakan raw query.
models.Category.findAll();
'select cate_id,cate_name from category'
equal
sequelize.query('select cate_id,cate
_name from category’,…)
Raw query :
Tables

8. Design Pattern e-shopay

9. CREDITS: This presentation template was created by Slidesgo,
including icons by Flaticon, and infographics & images by Freepik.
THANKS!
Any questions?