mongodb read and write

Signed-off-by: Arnav Gupta <[email protected]>

Author: championswimmer

Lecture16/sequelize-starter/MYSQL.md

@@ -0,0 +1,26 @@
+# Setting up MySQL DB
+
+Login
+
+```shell
+mysql -u root -p
+```
+
+```sql
+
+create database sampledb1;
+
+create user sampleuser1 identified by 'samplepass1';
+
+grant all privileges on sampledb1.* to sampleuser1;
+
+flush privileges;
+
+exit;
+```
+
+Login with this user
+
+```shell
+mysql -u sampleuser1 -p
+```

Lecture16/sequelize-starter/db.js

@@ -1,8 +1,16 @@
 const Sequelize = require('sequelize')
 
+// const db = new Sequelize({
+//   dialect: 'sqlite',
+//   storage: __dirname + '/test.db',
+// })
+
 const db = new Sequelize({
-  dialect: 'sqlite',
-  storage: __dirname + '/test.db',
+  dialect: 'mysql',
+  host: 'localhost',
+  username: 'sampleuser11',
+  password: 'samplepass1',
+  database: 'sampledb1',
 })
 
 const Users = db.define('user', {

Lecture16/sequelize-starter/package-lock.json

@@ -4,8 +4,9 @@
   "description": "",
   "main": "index.js",
   "dependencies": {
-    "sqlite3": "^4.1.0",
-    "sequelize": "^5.21.2"
+    "mysql2": "^2.0.0",
+    "sequelize": "^5.21.2",
+    "sqlite3": "^4.1.0"
   },
   "devDependencies": {},
   "scripts": {

Lecture16/sequelize-starter/package.json

@@ -3,11 +3,19 @@ const { db, Users } = require('./db')
 async function writeTask() {
   await db.sync()
 
-  await Users.create({
-    name: 'Jane Doe',
-    age: 30,
-    city: 'Mumbai'
-  })
+  // await Users.create({
+  //   name: 'Jane Doe',
+  //   age: 30,
+  //   city: 'Mumbai'
+  // })
+  await Users.bulkCreate([
+    {
+      name: 'Harry', age: 20
+    },
+    {
+      name: 'Ron', age: 21
+    }
+  ])
 
 }
 

Lecture16/sequelize-starter/test.db

@@ -0,0 +1,2 @@
+WiredTiger
+WiredTiger 3.1.1: (July 12, 2018)

Lecture16/sequelize-starter/write.js

@@ -0,0 +1 @@
+WiredTiger lock file

Lecture17/mongodb-starter/data/WiredTiger

@@ -0,0 +1,6 @@
+WiredTiger version string
+WiredTiger 3.1.1: (July 12, 2018)
+WiredTiger version
+major=3,minor=1,patch=1
+file:WiredTiger.wt
+access_pattern_hint=none,allocation_size=4KB,app_metadata=,assert=(commit_timestamp=none,read_timestamp=none),block_allocation=best,block_compressor=,cache_resident=false,checkpoint=(WiredTigerCheckpoint.14=(addr="018381e4b6cf46978481e44a6ddf158581e404672d5d808080e2cfc0e21fc0",order=14,time=1573299732,size=20480,write_gen=24)),checkpoint_lsn=(3,19200),checksum=uncompressed,collator=,columns=,dictionary=0,encryption=(keyid=,name=),format=btree,huffman_key=,huffman_value=,id=0,ignore_in_memory_cache_size=false,internal_item_max=0,internal_key_max=0,internal_key_truncate=true,internal_page_max=4KB,key_format=S,key_gap=10,leaf_item_max=0,leaf_key_max=0,leaf_page_max=32KB,leaf_value_max=0,log=(enabled=true),memory_page_image_max=0,memory_page_max=5MB,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=false,prefix_compression_min=4,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,value_format=S,version=(major=1,minor=1)