Presentation mongodb

Presented by: Group Members
Zubair Ahmed, Jameel Ahmed, Naeem Jan and Hassam Hamid
Instructor: Mr. Mukhtar Hussain
Class: BSCS 8th (2015-2018)
Presented by: Group Members
Date:Tuesday, September 11, 2018
Department: Computer Science

University ofTurbat2 |
PresentationTasks
1) Introduction to MongoDB By Jameel
Ahmed
2) Installing MongoDB By Naeem Jan
3) MongoDB Data Modelling By Zubair
Ahmed
4) MongoDB CRUD Operations By Hassam
Hamid

Introduction

The Family of NoSQL DBs
Key-values Stores
Hash table where there is a unique key and a pointer to a particular item of data.
Focus on scaling to huge amounts of data
E.g.Oracle BDB
Column Family Stores
To store and process very large amounts of data distributed over many machines
E.g.Cassandra, HBase
Document Databases
Collections of Key-Value collections
The next level of Key/value, allowing nested values associated with each key.
Appropriate for Web apps.
E.g. CouchDB, MongoDb
Graph Databases
Bases on property-graph model
Appropriate for Social networking, Recommendations
E.g. Neo4J, InfiniteGraph
Introduction to MongoDB

MongoDB
 Document-oriented NoSQL database
 Schema-free
 Based on Binary JSON; BSON
 Organized in Group of Documents  Collections
 Informal namespacing
 Auto-Sharding in order to scale horizontally
 Simple query language. Rich, document-based queries.
 Map/Reduce support
 Open Source

MongoDB
Who uses MongoDB
Weather Channel
ADP
Expedia
SourceForge
Bosch

7
Document store
RDBMS MongoDB
Database Database
Table,View Collection
Row Document (JSON,
BSON)
Column Field
Index Index
Join Embedded Document
Foreign Key Reference
Partition Shard
University ofTurbatIntroduction to MongoDB

Document store
RDBMS MongoDB
Database Database
Table,View Collection
Row Document (JSON,
BSON)
Column Field
Index Index
Join Embedded Document
Foreign Key Reference
Partition Shard
> db.user.findOne({age:39})
{
"_id" : ObjectId("5114e0bd42…"),
"first" : "John",
"last" : "Doe",
"age" : 39,
"interests" : [
"Reading",
"Mountain Biking ]
"favorites": {
"color": "Blue",
"sport": "Soccer"}
}
University ofTurbatIntroduction to MongoDB

Installation

Installation of MongoDB
How to Download Setup
 Open a browser
 Write mongodb
 Click MongoDB webite with https://www.mongodb.com

 Click on Get MongoDB buttion

 Click on Community Server button in the menu
 Choose an Operating System
 Click on D OWNLOAD button

 After downloading MongoDB then double click on the setup
 While installing,Accept terms and License Agreement,
 Then click next

 Click on the Complete button

 Click on the next button

 Uncheck “Install MongoDB Compass” then click Next button

 After installation, copy the path C:Program
FilesMongoDBServer4.0bin

 Then go toThis Pc properties then click “Advance system setting” button
 Then click on “EnvironmentVariable” to paste the path

 After, go to c:Program Files
 Create a folder named Data
 Create another folder named db in Data folder

 Then Open cmd ,Write the command “mongod”

 Again Open cmd ,Write the command “mongo”

 Go to https://robomongo.org

MongoDB Data Modelling

Schema Design
 Relational
 MongoDB
• Tabular Data-Tables,Rows and Columns
• Normalized- Flatten your data
• Columns with simple values(int, varchar)
• Related rows with foreign key references
• Indexes on values
• Databases > Collections > Documents
• Documents are monolithic units
• Embedded complex data structures
• No joins- repeat data for faster access
• Difficult to relate documents together

Flexible Schema and Documents structure
 Flexible Schema
 Document Structure
1. Reference 2. Embedded Data

Atomic operations
 Atomic Operations
• supports atomic operations executed against single documents
• An atomic operation is a set of operations that appears to be merely one single
operation to the rest of the system
• It will have positive or negative results
Examples:
1. $set: Sets a particular value.
2. $unset: Removes a particular value.
3.$inc: Increments a particular value by a certain amount.

 Data types
1. String
2.Integer
3.Boolean
4.Double
5.Max/Min keys
6.Array
7.TimeStamp
8.Object
9.Null
10.Symbol
11.Date
12.Object ID
13.Binary Data
14.Regular Expression
15.JavaScript Code

Some ConsiderationsWhile Designing Schema
 Considerations
• Design your schema according to user requirements.
• Combine objects into one document if you will use them together. Otherwise
separate them (but make sure there
• should not be need of joins.
• Duplicate the data (but limited) because disk space is cheap as compare to
compute time.
• Do joins while write, not on read.
• Optimize your schema for most frequent use cases.

Creating Database
 Mongodb Shell
 The use command
• Database is create using “use ” command (use DatabaseName)
Example:
>use UOTDatabase
Switched to db UOTDatabase

Creating Database
 commands
• use DatabaseName : Creating Database
• db: Currently selected Databse
• showdb: Shows all Database

Creating collection and document
 Creating collection and document
• db.movie.insert({"name":"tutorials point"})

MongoDB CRUD Operations
CRUD Operations
 Create Operations
 Read Operations
 Update Operations
 Delete Operations
MongoDB CRUDOperations

Create Operations
 Create Or Insert operations Add A New DocumentTo A Collection
 MongoDB providesThe Following Methods to InsertA Document
1. Db.collection.insertone()
2. Db.collection.insertmany()

READ Operations
 Read operations retrieves documents from a collection
 Methods For Reading Or Finding a document…
1. db.collection.find()

UPDATE Operations
 Update operations modify existing documents in a collection.
 Methods For Updating…….
1. db.collection.updateone()
2. db.collection.updatemany()
3. db.collection.replaceone()

DELETE Operations
 Delete operations remove documents from a collection
 Methods For Deleting Documents…
1. db.collection.deleteone()
2. db.collection.deletemany()

Thank you
Any Questions

Presentation mongodb

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