MongoDB with Python for Developers and Data Scientists

Databases 

Goal  : To understand databases in general and to get familiarity with different types of databases. 

• Introduction to Databases
• Different Type of Databases
• Flat File Databases
• hierarchical database
• object-oriented database
• Relational Databases
• NoSQL Databases

NoSQL Database

Goal : To learn about NoSQL databases and the need for NoSQL databases, this module will also take you through types Of NoSQL Databases. 

• Introduction to NoSQL Databases.
• CAP theorem
• Not only SQL or Not SQL
• Different type of NoSQL databases
• Key-value stores
• Column stores
• Document databases
• Graph databases

MongoDB an Introductory View 

Goal : This module starts with introduction to MongoDB and makes you understand the different components of MongoDB from a developer perspective. Participants will deep dive into how MongoDB stores data. 

• Introduction to MongoDB
• Structure of MongoDB
• Database
• Documents
• What is schemaless?
• JSON and BSON
• Data types in MongoDB
• Understanding Array in MongoDB
• Collection
• Simple Collection
• Capped Collections
• Understanding Embedded Documents
• MongoDB shell
• MongoDB shell introduction
• Starting MongoDB shell
• MongoDB simple commands
• Running Script

Introductory Javascript 

Goal : From MongoDB shell we will use Javascript to write all the queries.  Learning Javascript will enable participant to write efficient code on Mongo Shell. 

• JavaScript Introduction
• Variables in Javascript
• JavaScript code in mongo shell
• Operators
• Conditionals and Loops
• Function in Javascript 

CRUD operations in MongoDB 

Goal : Participants will learn to Perform CRUD operation on MongoDB using Mongo shell. 

• Creation of Database
• Deletion of Database
• Creation and Deletion of Collection
• Data insert  into collection
• insert()
• insertMany()
• Understanding write concern
• Data Selection and query
• find()
• findOne()
• Read Concern
• Querying array
• $push
• $pop
• $addToSet
• $pull
• $pullAll
• $all
• $each
• $slice
• Data Updation
• Introduction to data update.
• Update or Insert
• Updating many documents 

Uploading Data to, and Downloading  Data from, MongoDB 

Goal : We will learn, how to import data from csv and JSON file to MongoDB and How to export data from MongoDB to csv or JSON file. 

• mongoimport
• Introduction to mongoimport
• Options with mongoimport
• Different type of file imported by mongoimport
• mongoexport
• Introduction to mongoexport
• Options with mongoexport 

Data Aggregation in MongoDB 

Goal : Data aggregation provides important insight of given dataset. This topic will enable participants to find summary of given data and also derive useful insights from the data. 

• Introduction to Data Aggregation
• Understanding aggregate() method.
• Data Pipeline in aggregate method
• Pipeline Operators
• match
• $project
• $group
• $unwind
• $sort
• $limit
• $skip
• Aggregation commands
• $count
• $distinct
• $first
• $last
• MapReduce for Data aggregation in MongoDB
• Understanding Map
• Understanding Reduce

Indexing in MongoDB 

Goal : Participants will implement indexing on data and see how it makes their query faster. Participants will also understand about drawbacks of Indexing. 

• Introduction to Indexing in MongoDB
• Key selection
• Indexing on more than one key.
• Indexing to help data sorting.
• Unique Index
• Compound unique index.
• Sparse Indexes
• Indexing on Array
• Indexing on embedded documents.
• High cardinality and benefits of indexing.
• Dropping Index
• Re-indexing
• Drawback of Indexing 

Replication in MongoDB 

Goal :  How to ensure data availability in MongoDB ?. Does replication of data work? And many other questions will be discussed and implemented in this topic. 

• Why is replication needed.
• Master Slave architecture
• Introduction to Replica set.
• Concept of primary and secondary nodes.
• Standard, passive and arbiter nodes.
• Concept of failover and primary selection process
• Write process in MongoDB.
• Concept of Oplog.
• Syncing
• Election
• Rollback 

Sharding  

Goal :  What to do if MongoDB is dealing with huge amount of data? Should we go for Horizontal or Vertical scaling? How to run MongoDB on distributed system. 

• Introduction to Sharding.
• Concept of autosharding and MongoDB.
• Deciding Shard Key.
• Mongos
• Data balancing 

GridFS 

Goal : Discuss and  use GridFS. 

• Introduction to GridFS
• Why to use GridFS
• fs.chunk and fs.files

Python Basic : 

Goal :  Introductory knowledge to Python. 

• Introduction to Python.
• Python Shell.
• IDLE
• Spyder
• IPython.
• Jupyter Notebook.
• Introduction to Anaconda.
• Data type in Python .
• Operators in python.
• Indentation.

Collections  in  python

Goal : Participants will learn and implement Python Collection.

• List
• Introduction to List
• List operations
• List append
• List Extend
• List Insert
• List Pop and Remove
• List index and count
• List Comprehensions
• Dictionary
• Introduction to Dictionary
• Dictionaries operations
• Inserting elements into dictionary
• Dictionary element access
• Deleting elements from dictionary
• Set
• Introduction to Set
• Set Operations
• Union
• Intersection
• Difference
• Symmetric difference
• Other operations
• Tuples
• Introduction to Tuples
• Tuples Operations
• Index and count in Tuples 

Conditionals and Looping 

Goal :  Python Conditionals and Loops. 

• Introduction to conditionals
• if
• if and else
• if elif and else
• Introduction to looping
• for loop
• while loop
• break
• continue
• pass 

Strings:

Goal :  Understanding String manipulation in Python 

• Introduction to Strings
• String Operations
• String Concatenation
• String search
• String substitution
• String split and string join
• Other operation 

Functions

Goal :  Learning to write procedural Python 

• Inbuilt Functions
• User Defined Functions and its definition
• return statement
• Local and global variables
• None type variables
• Default argument
• Variable length arguments
• Anonymous functions 

PyMongo 

• Introduction to Pymongo
• Connecting to MongoDB using Python
• Reading Data From MongoDB
• Understanding cursor object
• Inserting Data into MongoDB collection
• Inserting single document
• Inserting many documents
• Querying MongoDB
• Data updation to MongoDB
• Deleting documents
• Deleting Collection
• Deleting DataBase
• Bulk Insert