Course Content

  Chapter 1 - Introducing Course

• About Sahosoft
• Basic Recursion
• Course Introduction
• Course Overview
• Where to find the Course Source Code

Chapter 2 - Introducing MERN, MEAN, MEVN

• MERN, MEAN, MEVN 
  • What is Stack?
  • What is MERN Stack?
    • Components of MEAN Stack
    • Advantages of MEAN Stack
    • Disadvantages of MEAN Stack
  • What is MEAN Stack?
    • Components of MERN Stack
    • Advantages of MERN Stack
    • Disadvantages of MERN Stack
  • What is MEVN Stack?
    • Components of MEVN Stack
    • Advantages of MEVN Stack
    • Disadvantages of MEVN Stack

 Chapter 3 - Introducing API

• What is API
• What is REST | REST API & RESTFUL API
  • Architecture of REST
  • Principles of REST API
    • Client-Server
    • Stateless
    • Cacheable
    • Uniform Interface
    • Layered system
    • Code on demand
  • Methods of REST API | Http Verbs
    • Get
    • Post
    • Put
    • Delete
    • Trace
    • Options
    • Connect
    • Patch

Chapter 4 - Introducing mongodb

• What is data?
• What is database?
• What is DBMS?
• What is Relational Database?
• What is Non-Relational Database?
  • Why NoSQL?
  • Types of NoSQL database
    • Columnar Database 
    • Document Database 
    • Key Value Database 
    • Graph Based Database 
  •  
• What is the CAP Theorem?
  • Consistency
  • Availability
  • Partition Tolerance
• What is distributed storage?
• How to implement distributed database in RDBMS like SQL Server?
• What is MongoDB
  • History of MongoDB
  • Purpose of building MongoDB
  • What is document oriented database
  • Features of MongoDB
  • MongoDB Advantages
  • Where MongoDB should be used
  • Before learning MongoDB
  • What is Database in MongoDB
  • What is Collection in MongoDB
  • What is Document in MongoDB
  • What is Field in MongoDB
  • JSON and BSON
    • What is JSON
    • What is BSON
  • Does MongoDB use BSON, or JSON?
  • JSON vs BSON
  • MongoDB Datatypes
  • Frequently Asked Questions
    • What kind of database is MongoDB?
    • Does MongoDB database store its data in tables?
    • Do MongoDB databases have schemas?
    • Does MongoDB support SQL?
    • What are typical uses for MongoDB?
    • Does MongoDB support transactions?
    • Does MongoDB require a lot of RAM?
    • Does MongoDB handle caching?
  •  
• MongoDB – Environment
  • How to download MongoDB
• MongoDB Shell
• MongoDB Compass
• What is mongod
• What is Mongo
• What is Mongos
• Setting up Environment Variables
• MongoDB Create Database
• MongoDB Drop Database
• MongoDB Different port
• MongoDB - Data Modelling
  • Embedded Data Model
  • Normalized Data Model
• MongoDB Create Collection
  • How does MongoDB create collection automatically?
• MongoDB Drop collection
• MongoDB insert documents
  • The insertOne() method
  • The insert() Method
  • The insertMany() method
• MongoDB update documents
  • MongoDB Update() Method
  • MongoDB Save() Method
  • MongoDB findOneAndUpdate() method
  • MongoDB updateOne() method
  • MongoDB updateMany() method
• MongoDB Delete documents
• Remove all documents
• Remove all documents that match a condition
• Remove a single document that match a condition
• MongoDB Query documents
  • The find() Method
  • The pretty() Method
  • The findOne() method
• MongoDB - Comparison Operators
  • Equality
  • Less Than
  • Less Than Equals
  • Greater Than
  • Greater Than Equals
  • Not Equals
  • Values in an array
  • Values not in an array
• MongoDB - Logical Operator
  • AND in MongoDB
  • OR in MongoDB
  • Using AND and OR Together in MongoDB
  • NOR in MongoDB
  • NOT in MongoDB
• MongoDB - Element Operator
  • $exists
• MongoDB – Projection
  • The find() Method
• MongoDB – Limit Records
  • The Limit() Method
  • MongoDB Skip() Method
• MongoDB –Sort Records
  • The sort() Method
• MongoDB – Basic Level Query practice
• Full-Text Search in MongoDB
  • Introducing MongoDB Text Search
  • Creating a Text Index
  • Indexing a Single Field
  • $text in MongoDB
  • Text Search Score (Sort by Text Search Score)
  • Sorting in text search in MongoDB
  • Indexing Multiple Fields (Compound Indexing)
  • Deleting Text Index
  • Indexing the Entire Document (Wildcard Indexing)
  • Phrase Search
  • Negation Search
  • Looking Behind the Scenes
  • Weighted Text Search
  • Perform Case Sensitive Search
    • Case Sensitive Search for a Term
    • Case Sensitive Search for a Phrase
    • Case Sensitivity with Negated Term
  • Text Search with Additional Query and Sort Expressions
  • Change the mongo Shell Batch Size
• Indexes in Mongodb
  • What is MongoDB Index?
  • Understanding Impact of Indexes
  • Different Types of Indexing in MongoDB
    • Default_id Index
    • Single Field Index
    • Compound Index
    • Multi-Key Index
    • Special Index (Geospatial, Text, TTL)
    • Hashed Indexes
  • How to Find Indexes
  • How to Drop Indexes
  • How to Remove all Indexes?
• MongoDB Compass
  • How to Download and Install MongoDB Compass
  • Establishing connection with MongoDB Compass
  • Favorite Connections
    • Save a Favorite Connection
    • Save from Connect Screen
• Regular Expressions in MongoDB
  • What Are Regular Expressions in MongoDB?
  • Using $regex operator for Pattern matching
    • Exact pattern matching
    • must start with letter 
    • Pattern Matching with $options
    • Pattern matching without the regex operator
    • How to Use regex for array element in MongoDB?
  • USING MONGODB REGULAR EXPRESSIONS (REGEX) WITHOUT SLOWING YOUR CLUSTER DOWN
    • What’s a regex query?
    • How to avoid regex queries from scanning a whole index?
    • Case insensitive with no anchor
  • $regex vs. /pattern/ Syntax
    • $in Expressions
    • Implicit AND Conditions for the Field
    • $regex and $not
• Index Use
  • Perform a LIKE Match
  • Perform Case-Insensitive Regular Expression Match
  • Multiline Match for Lines Starting with Specified Pattern
  • Use the. Dot Character to Match New Line
• MongoDB - Analyzing Queries
  • Using $explain
  • Using $hint
• MongoDB - Aggregation
  • What is MongoDB Aggregation?
  • MongoDB Aggregation Pipeline
  • Map-Reduce
  • Single Purpose Aggregation Operations
  • Stages of MongoDB Aggregation Pipeline
    • $match
    • $project
    • $group
    • $unwind
    • $sort
    • $skip 
    • $limit
    • $sample
  • MongoDB Aggregation Pipeline states/Operators: Additional
    • $addFields
    • $count
    • $lookup
    • $sortByCount
    • $facet
  • MongoDB - $unwind operator in Depth
    • How $unwind works with non-array field paths
    • Missing field as the path
    • $unwind operator options
      • includeArrayIndex option
      • preserveNullAndEmptyArrays option
    • Grouping data by Unwound values
    • Using $unwind on embedded arrays
  • MongoDB Aggregation Expression
    • $sum
    • $avg
    • $min
    • $max
    • $push
    • $addToSet
    • $first
    • $last
  • MongoDB aggregate Set Operator
    • $setEquals
    • $setIntersection
    • $setUnion
    • $setDifference
    • $setIsSubset
    • $anyElementTrue
    • $allElementsTrue
  • Query and Projection Operators
    • $eq    
    • $gt     
    • $gte   
    • $in     
    • $lt      
    • $lte    
    • $ne    
    • $nin
    • $and
    • $not
    • $nor
    • $or
  • Element
    • $exists
    • $type
  • Evaluation
    • $expr
    • $jsonSchema
    • $mod
    • $regex
    • $text
    • $where
  • Array
    • $all
    • $elemMatch
    • $size
  • Projection Operators
    • $
    • $elemMatch
    • $meta
    • $slice
  • Miscellaneous Operators
    • $comment
    • $rand
  • $type
  • $expr
  • Using $expr with Conditional Statements
  • Query and Projection Operators
    • $concat                                   
    • $split
    • $substr
    • $toLower
    • $toUpper
    • $strcasecmp
    • $strLenCP
    • $substrCP
    • $$indexOfCP
  • Arithmetic Aggregation Operators
    • $add
    • $subtract
    • $multiply
    • $divide
    • $abs
    • $ceil
    • $floor
    • $trunc
    • $mod
    • $pow
    • $sqrt
  • Array Aggregation Operators
    • $arrayElemAt
    • $concatArrays
    • $filter
    • $indexOfArray
    • $isArray
    • $range
    • $reverseArray
    • $reduce
    • $size
    • $slice
    • $zip
    • $in
    • $reduce (aggregation)
  • Conditional Aggregation Operators
    • $cond
    • $ifNull
    • $switch
  • Aggregation Variable Operators
    • $map
    • $let
  • Aggregation Literal Operators
    • $literal
  • Date()
    • Date Aggregation Operators
      • $dayOfYear
      • $dayOfMonth
      • $dayOfWeek
      • $year
      • $month
      • $week
      • $hour
      • $minute
      • $second
      • $millisecond
      • $dateToString
  • Group Accumulator Operators
    • $sum
    • $avg
    • $first
    • $last
    • $max
    • $min
    • $push
    • $addToSet
    • $stdDevPop
    • $stdDevSamp
  • Miscellaneous Operators
    • $dateFromString
    • $dateFromParts
    • $dateToParts
    • $ltrim
    • $rtrim
    • $trim
    • $replaceRoot 
    • $mergeObjects 
    • $replaceWith 
    • $sample 
    • $rand 
    • $round 
    • $objectToArray
    • $arrayToObject
    • $replaceOne
    • $replaceAll
    • $set
    • $meta
    • $bsonSize
    • $regexFind
    • $regexFindAll
    • $regexMatch
    • $convert
    • $toBool
    • $toString
    • $toInt
    • $toLong
    • $toDecimal
    • $toDouble
    • toDate
    • toObjectId
  • System Variables
    • What is System Variables
      • NOW
      • CLUSTER_TIME
      • ROOT
      • CURRENT
      • REMOVE
      • DESCEND
      • PRUNE
      • KEEP
  • Field Update Operators
    • $set
    • $inc
    • $min
    • $max
    • $mul
    • $rename
    • $currentDate
    • $setOnInsert
    • $unset
  • Array Update Operators
    • $ (update)
    • $[]
    • $[identifier]
    • $addToSet
    • $pull
    • $push
    • $pullAll
  • Update Operator Modifiers 
    • $each
    • $position
    • $slice
    • $sort
  • Cursor in MongoDB
    • What is Cursor in MongoDB?
    • Count() Method
    • Limit() Method
    • Skip() Method
    • Sort() Method
    • Next() Method
    • toArray() Method
    • hasNext() method
    • Explain() Method
    • hint() Method
    • itcount() Method
    • batchSize() Method
    • objsLeftInBatch() Method
    • map() Method
    • pretty() Method
  • MongoDB Database Command
    • commandHelp
    • copyDatabase
    • createCollection
      • capped
      • autoIndexId
      • size
      • max
    • dropDatabase
    • fsyncLock
    • fsyncUnlock
    • getCollection
    • getCollectionNames
    • getMongo
    • getName
    • getSiblingDB
    • help
    • hostInfo
    • listCommands
    • printCollectionStats
    • stats
    • version
    • aggregation
    • shutdownServer
  • MongoDB Bulk Operation Methods
    • Bulk()
    • Ordered Operations
    • Unordered Operations
    • Bulk Methods
      • Bulk.insert()
      • Bulk.find()
      • Bulk.find.removeOne()
      • Bulk.find.remove()
      • Bulk.find.replaceOne()
      • Bulk.find.updateOne()
      • Bulk.find.update()
      • Bulk.find.upsert()
      • Bulk.execute()
      • Bulk.getOperations()
      • Bulk.tojson()
      • Bulk.toString()
  • What is Replication in MongoDB?
    • Key features of Replication
    • What is a Replica Set in MongoDB?
    • Replica Set Features
    • How Replication Works in MongoDB
      • Primary
      • Secondaries
    • Replica Set Oplog
    • What is Heartbeat in Replication?
    • Replica Set Primary
    • Replica Elections
  • What is Sharding  in MongoDB?
    • Vertical Scaling
    • Horizontal Scaling
    • Advantages of Sharding
    • Sharded Cluster
    • Sharding Strategy
      • Hashed Sharding
      • Ranged Sharding

Chapter 5 – Advance JavaScript

• How JavaScript Works
• What is Execution Context 
• What is Execution Stack 
• What is Creation Phase 
• What is Execution Phase
• Phase of execution context
  • Creation Phase
  • Execution Phase
• Property of execution context
  • Variable Object
  • Scope Chain
  • 'this' Variable
• Function Hoisting in JavaScript
• Variable Hoisting in JavaScript
• Scope Chain & Lexical Scoping in JavaScript
• this in JavaScript
• JavaScript Object
  • JavaScript Objects Are Mutable
  • JavaScript Object Properties
  • Accessing JavaScript Properties
  • JavaScript Object Loop
  • Adding/Deleting New Properties in Object
  • JavaScript Object Methods
    • Accessing Object Methods
    • Adding a Method to an Object
  • JavaScript Object.values()
  • JavaScript JSON.stringify()
  • JavaScript Stringify Functions/Array
• JavaScript Object Accessors
  • JavaScript Accessors (Getters and Setters)
  • Why Using Getters and Setters?
• JavaScript Object Constructors
• JavaScript Object Prototypes
• JavaScript Data Types
  • Primitive data type
  • Non-primitive (reference) data type
• Pass by Value Vs Pass by Reference in JavaScript
• Shallow copy and Deep copy in JavaScript
• Functions is First Class Citizens
• Callback Function in JavaScript
• Higher Order Function in JavaScript
• Immediately Invoked Function Expression - IIFE
  • Advantages of IIFE
• Closure in JavaScript
• What is Synchronous Programming in JavaScript
• What is Asynchronous Programming in JavaScript
• Synchronous vs Asynchronous Programming in JavaScript
• Why Asynchronous?
• Event Loop in JavaScript

Chapter 6 – ES6/ES7/ES8

• What is ECMAScript?
• ECMAScript Editions
• var, let & const
• Template Literals in JavaScript
• Template literals (template strings) Method
• Array Destructuring 
• Object Destructuring
• Default Parameters
• Rest Parameters
• Fat Arrow Function
• Spread Operator
• Callback hell in JavaScript
• Promises in JavaScript
• Async Await in JavaScript

Chapter 7 - Module Import - Export

• What is Module 
• What is Export 
• Module - Export
  • Types of Export
    • Default Export
    • Named Export
  • Module - Default Export 
  • Module – Named Export 
• Module – Import
  • Types of Import
    • Default Import
    • Named Import
  • Module - Importing Default
  • Module - Importing Named
• Module - Importing All
• Module - Importing default & named

Chapter 8 – Introducing Node JS

• What is Node.js?
• What is V8?
• WHY Node.js?
• Features of Node.js
• Who Uses Node.js?
• Where to Use Node.js?
• Prerequisites
• Node.js Frameworks and Tools
• Setup Node.js Development Environment
  • Verify Installation
• What is a Node.js File?
• Run Node.js scripts from the command line
• Creating First Node.js Application
• A brief history of Node.js
• How much JavaScript do you need to know to use Node.js?
• Differences between Node.js and the Browser
• Difference between Node.JS and JavaScript
• What do you mean by non-blocking or asynchronous?
• Node.js Process Model
  • Traditional Web Server Model
  • Node.js Process Model
• Make Server Output on Browser | Write Basic Level API in node js
• Node.js Console
  • console.log()
  • console.error()
  • console.warn()
• What is REPL
  • Simple Expression
  • Use Variables
  • Multiline Expression
  • Underscore (-) Variable
  • Editor Mode
• Module in Node JS
  • What is a Module in Node.js?
  • Node.js Module Types
    • Core Modules
    • Local Modules
    • Third Party Modules
  • What is Node.js Core Modules (Built-in Modules)
    • Include/Loading Core Modules
  • What is Node.js Local Module (Own Modules)
    • Loading Local Module
  • Export Module in Node.js
    • Different types as a module using module.exports
      • Export Literals
      • Export Object
      • Export Function
      • Export Function as a Class
      • Load Module from the Separate Folder
      • Exporting Multiple Methods and Values
• Complete NPM
  • What is a Package?
  • What is NPM (Node Package Manager) 
  • Global vs Local Installation
  • What is package.json
  • Attributes of Package.json
  • Using Semantic Versioning to manage packages
  • package-lock.json
  • Search a Module
  • Create a Module
  • Updating a Module
  • Uninstalling a Module
• What is Module Wrapper Function in Node.JS
• Node.js Core Module (File System Module)
  • Common use for the File System module
    • Read files
    • Create files
    • Update files
    • Delete files
    • Rename files
• Node.js - Callback
  • What is Callback?
• Node.js - Event Loop
  • What is Event Loop
  • Features of Event Loop
  • Difference between Events and Callbacks
  • EventEmitter class to bind event and event listener
  • bind event handler with an event
  • fire an event
• Node.js - Event Emitter
  • What is Event Emitter
  • Event Emitter Methods
    • addListener(event, listener)
    • on(event, listener)
    • once(event, listener)
    • removeListener(event, listener)
    • removeAllListeners([event])
    • EventEmitter.defaultMaxListeners
      • setMaxListeners(n)
      • getMaxListeners(n)
    • listeners(event)
    • emit(event, [arg1], [arg2], [...])
    • eventNames()
  • Event Emitter Class Methods
    • listenerCount(emitter, event)
    • eventEmitter.prependOnceListener()
    • eventEmitter.prependListener()
  • Event Emitter Events
    • newListener
    • removeListener
  • Asynchronous events
  • setImmediate()
  • process.nextTick()
• Node.js – Buffers
• Creating Buffers
• Writing to Buffers
• Reading from Buffers
  • Convert Buffer to JSON
• Concatenate Buffers
• Compare Buffers
• Copy Buffer
• Slice Buffer
• Buffer Length
• Buffer Class Methods
  • Buffer.isEncoding(encoding)
  • Buffer.isBuffer(obj)
  • Buffer.byteLength(string[, encoding])
  • Buffer.concat(list[, totalLength])
  • Buffer.compare(buf1, buf2)
• Node.js – Streams
  • What exactly are streams?
  • Advantages of Streams
  • Types of streams
    • Writable
    • Readable
    • Duplex
    • Transform
  • Reading from a Stream
  • Writing to a Stream
  • Piping the Streams
  • Chaining the Streams
• Node.js - Global Objects
  • List of Node.js global object
    • __dirname
    • __filename
    • Console
    • Process
    • Buffer
    • setImmediate(callback[, arg][, ...])
    • setInterval(callback, delay[, arg][, ...])
    • setTimeout(callback, delay[, arg][, ...])
    • clearImmediate(immediateObject)
    • clearInterval(intervalObject)
    • clearTimeout(timeoutObject)
• Node.js File System Module
  • Common use for the File System module:
    • Read files
    • Create files
    • Update files
    • Delete files
    • Rename files
    • Truncate files
  • Common Errors when using the File System Module
    • ENOENT
    • EISDIR
    • ENOTDIR
• Node.js Synchronous vs Asynchronous
  • What is Synchronous and Asynchronous approach?
• Node.js File Information Method
  • Get File Information
    • stats.isFile()
    • stats.isDirectory()
    • stats.isBlockDevice()
    • stats.isCharacterDevice()
    • stats.isSymbolicLink()
    • stats.isFIFO()
    • stats.isSocket()
•   Methods for Working with Directories in Node.js
  • Check If a Directory Exists
  • Create a New Directory
  • List All the Files in a Directory (including sub-directories)
  • Get All the Files in the Directory
  • Get The Number of Files in a Directory
  • Rename a Directory
  • Delete an Empty or Non-Empty Directory 
    • Delete an Empty Directory
    • Delete a Non-Empty Directory Along with Its Contents
• How to Add Comments in Node.js
  • Single-Line Comments
  • Block Comments
• OS Module in Node.JS
  • What is OS Module
  • Methods of OS Module
    • arch()
    • constants
    • cpus()
    • endianness()
    • EOL
    • freemem()
    • hostname()
    • loadavg()
    • networkInterfaces()
    • platform()
    • release()
    • tmpdir()
    • totalmem()
    • type()
    • uptime()
    • userInfo()
• Path Module in Node.JS
  • What is Path Module
  • Methods of Path Module
    • basename()
    • delimiter
    • dirname()
    • extname()
    • format()
    • isAbsolute()
    • join()
    • normalize()
    • parse()
    • posix
    • relative()
    • resolve()
    • sep
    • win32
• Node.js StringDecoder
• Node.js Query String
  • Node.js Query String Methods
    • querystring.parse(str[, sep][, eq][, options])
    • querystring.stringify(obj[, sep][, eq][, options])
• What is a Web Server?
  • Create Node.js Web Server
  • Listen to the server
  • Handle HTTP Request (Node JS Routing Handle HTTP Requests)
  • Sending JSON Response
    • JSON Syntax Rules
  • JSON.stringify()
  • JSON.parse()
• What is API?
• Parse a querystring
• Handling GET Requests in Node.js
• Node.js URL Module
• The Built-in URL Module
• Returning Different Types of Content
  • JSON
  • CSV
  • HTML
• Converting Callbacks to Promises in Node.js
  • What is a Callbacks
  • What is a Callbacks hell
  • What is a Promise
  • Converting a Callback to a Promise
    • Creating Your Promise
    • Node.js Promisify
  • fs promises
    • Reading Files with readFile() promises
    • Writing Files with writeFile() promises
    • Deleting Files with unlink() promises
    • Moving Files with rename() promises
• Node.js Upload Files
• Node.js Redirect URL
• Debug Node.js Application
• What is Express?
  • What is Express?
  • Advantages of Express.js
  • Install Express.js
  • Send Text,HTML & JSON Data as a Response using Express JS
  • Express.js Routing
  • Serve Static Resources using Express.js
    • Serve HTML CSS & JS Files 
    • Serve Static Website using HTML & CSS 
  • ExpressJS - HTTP Methods
    • Handle GET Request
    • Handle POST Request
    • Handle PUT Request
    • Handle DELETE Request
  • ExpressJS - URL Building
•