Basics of NoSQL Databases - MongoDB

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databases

SQL databases , table, row,

fields ,records |

structure record databases

- NoSQL Not Only SQL Databases

database |

NoSQL databases

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NoSQL Databases

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non-relational database

(Strict) (rigid) |

table record store |

clusters run web data store

| scalability |

bigdata |

databases app web

apps Google Mail, Google Earth, Ebay, LinkedIn,

facebook, Amozon |

users fast response time |

handle

|

feature fast update adopt |

down time performance |

NoSQL Databases

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1. Key-value Databases

2. Document Databases

3. Column family stores Databases

4. Graph Databases

Key-Value databases python dictionary.

flexible |

Cassandra, Amazon DyanmoDB, ATS (Azure Table Storage, Riak, BerkeleyDB |

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Document Databases key-value databases |

key-value pair structured semi-

structured document store

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keys string

values |

MS office document, PDFs, XML,

JSON ,BSON |

JSON (JavaScript Object Notation)

BSON (Binary JSON)

JSON open,

standard modern web

data interchange

XML |

JSON Python dictionaries

|

- MongoDB, Couch DB

DocumentDB |

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Column Family Store Database column store column family

database

column oriented |

Column family storage

mechanism

rows |

row column |

row key

row

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- Hbase,

Cassandra, HyperTable |

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Graph Database store

grafical |

object

nodes

edges nodes

relation |

- Neo4j,

Blazegraph, Titan |

NoSQL Databases Advantages Disadvantages

,

Advantages:

Flexible Data Model

flexible database

type store

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Evolving Data Model

system down

schema |

Elastic Scalability

database store

|

High Performance

throughput latency

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Open Source

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Disadvantages:

Lack of Standardization

NoSQL database

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Backup of Database

NoSQL databases

backup MongoDB

backup tool

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Consistency

NoSQL database, consistency

performance scalability

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duplicacy |

MongoDB

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MongoDB document-oriented NoSQL database |

dynamic schemas JSON

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free open source software high scalability high

performance |

MongoDB Terminology

MongoDB Term Description SQL Term

Field name-value pair information | Column

Document Locally related fields Row/record

Collection Related documents Table

Database Collections container. MongoDB server

database |

Database

Primary key Unique field document identify | Primary key

MongoDB install

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open | https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/#install-mdb-edition

msi version |

https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/https://docs.mongodb.com/manual/tutorial/install-mongodb-on-windows/

MongoDB install

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MSI file open MongoDB install |

path check

mongodb.exe file mongo.exe file |

C:\Program Files\MongoDB\Server\4.0\bin

c:\ data db

| c:\data\db

command window C:\Program

Files\MongoDB\Server\4.0\bin location mongod

run mongod run |

command window open path mongo

run |

MongoDB start

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Mongo run mongod running state | mongo commands |

mongodb installer 190 MB program files install | C:\Program Files\MongoDB\Server\4.0\bin path system path | windows path |

MongoDB Data Types

,

S.N. Data Type DataType Number

S.N. Data Type DataType Number

1. Double 1 10. Null 11

2. String 2 11. Regular Expression 12

3. Object 3 12. JavaScript 13

4. Array 4 13. Symbol 14

5. Binary Data 5 14. JavaScript with scope 15

6. Undefined 6 15. Integer 16 and 18

7. Object Id 7 16. Timestamp 10

8. Boolean 9 17. Min Key 255

9. Date 10 18. Max Key 127

MongoDB basic commands

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Database create MongoDB database create |

information database insert database |

Current Database >show dbs database

>show cllections current database collections

Database use >use mydb

CRUD operations operations -

Create

Read

Update

Delete

CRUD operation |

MongoDB basic commands

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Save operation database MongoDB database create |

information database insert database

|

collection save insert |

db..save({})

show collections collection |

>USE database |

school database 1 collection insert |

MongoDB basic commands

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Save operation database

documents insert |

document insert mongoDB field

_id value set |

| _id value

insert provide |

Save insert document insert

database collection

mongoDB database |

2 document insert |

MongoDB basic commands

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Insert operation database collection insert |

db..insert({})

show collections collection |

school database 1 collection insert |

save multiple documents insert

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>db.teachers.insertMany([{name:Ratan},{name:Krishna,age:45}])

MongoDB basic commands

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Object Create documents insert

object field object |

stud valid mongoDB |

stud field address value addr |

MongoDB basic commands

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Object array | Name: Himanshu

Class:11

Section: A

Subjects: English, Hindi, Maths, Physics, Chemistry

Subjects array |

MongoDB basic commands

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Read Operation: Read operation database collection documents access

| syntaxes |

>db..find() collection documents show |

>db..findOne() record show |

>db..findOne({:}) search criteria

|

record match null return |

MongoDB basic commands

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Read Operation:

pretty( ) documents indentation JSON print |

MongoDB basic commands

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Read Operation:

name field _id |

_id |

MongoDB basic Operators

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Comparison Operator:

databases mongoDB operators

delete, read update operation perform |

Operator Name

Meaning

$eq Equal to

$gt Greater than

$gte Greater than or equal to

$lt Less than

$lte Less than or equal to

$ne Not equal to

MongoDB basic Operators

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Comparision Operator:

conditional based range |

{field:{$gte:, $lte:}}

MongoDB basic Operators

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Condition based on List/Array

Operator Name Meaning

$in In

$nin Not In

{ field :{ $in : [ val1,val2, . . . . . ] } }

{ field :{ $nin : [ val1,val2, . . . . . ] } }

Section match show match |

MongoDB basic Operators

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Logical Query Operators

Operator Name

Meaning

$not Logical NOT

$and Logical AND

$or Logical OR

{ field :{ $not :{}} }

{ field :{ $and :[{}, {},..]} }

{ field :{ $or :[{}, {},..]} }

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Update Operation: Update operation |

>update/updateOne >updateMany ( $set operator )

>db..update/updateOne({query-exp},{$set:{:, . . . }}

primary key | age 12 Hari Prakash |

matching records changes updateMany( ) |

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Delete Operation: Delete operation | >deleteOne >deleteMany

>db..deleteOne({}) matching record delete |

>db..deleteMany({}) matching delete |

Hari Prakash record delete

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