Data Engineers
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Life of a Data Engineer.....


Business user : Can we add a filter on this dashboard. This will help us track a critical metric.
me : sure this should be a quick one.

Next day :

I quickly opened the dashboard to find the column in the existing dashboard's data sources.  -- column not found

Spent a couple of hours to identify the data source and how to bring the column into the existence data pipeline which feeds the dashboard( table granularity , join condition etc..).

Then comes the pipeline changes , data model changes , dashboard changes , validation/testing.

Finally deploying to production and a simple email to the user that the filter has been added.

A small change in the front end but a lot of work in the backend to bring that column to life.

Never underestimate data engineers and data pipelines ๐Ÿ’ช
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These are the Top 5 Most Common SQL Questions for Data Engineering:


1. Total records after joining two tables on all types of joins
2. Rolling Sum and Nth salary based questions
3. Lag/Lead based questions e.g., consecutive months of increasing sales or YoY growth
4. Query to find employees who earn more than their managers
5. Removing duplicates from a table


Key Takeaways:
- Master window functions and joins
- Practice medium to hard SQL questions regularly

Getting good at SQL will pay off in the long run! ๐Ÿ’ช

Join our WhatsApp channel of Data Engineers: https://whatsapp.com/channel/0029Vaovs0ZKbYMKXvKRYi3C
FREE RESOURCES TO LEARN DATA ENGINEERING
๐Ÿ‘‡๐Ÿ‘‡

Big Data and Hadoop Essentials free course

https://bit.ly/3rLxbul

Data Engineer: Prepare Financial Data for ML and Backtesting FREE UDEMY COURSE
[4.6 stars out of 5]

https://bit.ly/3fGRjLu

Understanding Data Engineering from Datacamp

https://clnk.in/soLY

Data Engineering Free Books

https://ia600201.us.archive.org/4/items/springer_10.1007-978-1-4419-0176-7/10.1007-978-1-4419-0176-7.pdf

https://www.darwinpricing.com/training/Data_Engineering_Cookbook.pdf

Big Data of Data Engineering Free book

https://databricks.com/wp-content/uploads/2021/10/Big-Book-of-Data-Engineering-Final.pdf

https://aimlcommunity.com/wp-content/uploads/2019/09/Data-Engineering.pdf

The Data Engineerโ€™s Guide to Apache Spark

https://t.me/datasciencefun/783?single

Data Engineering with Python

https://t.me/pythondevelopersindia/343

Data Engineering Projects -

1.End-To-End From Web Scraping to Tableau  https://lnkd.in/ePMw63ge

2. Building Data Model and Writing ETL Job https://lnkd.in/eq-e3_3J

3. Data Modeling and Analysis using Semantic Web Technologies https://lnkd.in/e4A86Ypq

4. ETL Project in Azure Data Factory - https://lnkd.in/eP8huQW3

5. ETL Pipeline on AWS Cloud - https://lnkd.in/ebgNtNRR

6. Covid Data Analysis Project - https://lnkd.in/eWZ3JfKD

7. YouTube Data Analysis 
   (End-To-End Data Engineering Project) - https://lnkd.in/eYJTEKwF

8. Twitter Data Pipeline using Airflow - https://lnkd.in/eNxHHZbY

9. Sentiment analysis Twitter:
    Kafka and Spark Structured Streaming -  https://lnkd.in/esVAaqtU

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
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๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜ 

Data analytics is a must-have skill in todayโ€™s digital era, and Google offers exceptional free courses to help you excel

- Google Analytics Certification
- Google Analytics for Power Users
- Advanced Google Analytics

๐‹๐ข๐ง๐ค ๐Ÿ‘‡:- 

https://pdlink.in/423LMom

Enroll For FREE & Get Certified๐ŸŽ“
Tools for Data Engineers ๐Ÿ‘†
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Languages used by data engineers:

๐Ÿ“SQL
๐Ÿ“Python
๐Ÿ“Scala
๐Ÿ“Pyspark
๐Ÿ“Spark SQL
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Here are some incredible platforms where you can download datasets for your project:


Our World in Data https://ourworldindata.org/

World Health Organization (https://www.who.int/data/gho

Statcounter (https://gs.statcounter.com/

Food and Agriculture Organization of the UN (FAO) (https://www.fao.org/home/en

World Bank (https://data.worldbank.org/)
๐—š๐—ฒ๐˜ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐——๐—ฟ๐—ฒ๐—ฎ๐—บ ๐—๐—ผ๐—ฏ ๐—œ๐—ป ๐—”๐—บ๐—ฎ๐˜‡๐—ผ๐—ป, ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ, ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜, ๐—ก๐—ฉ๐—œ๐——๐—œ๐—”, ๐—ฎ๐—ป๐—ฑ ๐— ๐—ฒ๐˜๐—ฎ (๐—™๐—ฎ๐—ฐ๐—ฒ๐—ฏ๐—ผ๐—ผ๐—ธ) ๐˜„๐—ถ๐˜๐—ต ๐˜๐—ต๐—ฒ๐˜€๐—ฒ ๐—ฐ๐—ผ๐—บ๐—ฝ๐—ฟ๐—ฒ๐—ต๐—ฒ๐—ป๐˜€๐—ถ๐˜ƒ๐—ฒ ๐—ฟ๐—ฒ๐˜€๐—ผ๐˜‚๐—ฟ๐—ฐ๐—ฒ๐˜€๐Ÿ˜

1๏ธโƒฃ Amazon Interviewing Guide
2๏ธโƒฃ Google Interview Tips
3๏ธโƒฃ Microsoft Hiring Tips
4๏ธโƒฃ NVIDIA Hiring Process
5๏ธโƒฃ Meta Onsite SWE Prep Guide

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/40OSJJ6

Crack Interview & Get Your Dream Job In Top MNCs
Flow chart of commonly used statistical tests
๐Ÿ”ฅ2
๐…๐‘๐„๐„ ๐‚๐ž๐ซ๐ญ๐ข๐Ÿ๐ข๐œ๐š๐ญ๐ข๐จ๐ง ๐‚๐จ๐ฎ๐ซ๐ฌ๐ž๐ฌ ๐Ÿ˜

1) Generative AI

2) Big data artificial intelligence

3 ) Microsoft Al for beginners

4) Prompt Engineering for Chat GPT

๐‹๐ข๐ง๐ค๐Ÿ‘‡ :- 

https://pdlink.in/40Fbg9d

Enroll For FREE & Get Certified๐ŸŽ“
โค1
Struggling with Machine Learning algorithms? ๐Ÿค–

Then you better stay with me! ๐Ÿค“

We are going back to the basics to simplify ML algorithms.
... today's turn is Logistic Regression! ๐Ÿ‘‡๐Ÿป

1๏ธโƒฃ ๐—Ÿ๐—ข๐—š๐—œ๐—ฆ๐—ง๐—œ๐—– ๐—ฅ๐—˜๐—š๐—ฅ๐—˜๐—ฆ๐—ฆ๐—œ๐—ข๐—ก
It is a binary classification model used to classify our input data into two main categories.

It can be extended to multiple classifications... but today we'll focus on a binary one.

Also known as Simple Logistic Regression.

2๏ธโƒฃ ๐—›๐—ข๐—ช ๐—ง๐—ข ๐—–๐—ข๐— ๐—ฃ๐—จ๐—ง๐—˜ ๐—œ๐—ง?
The Sigmoid Function is our mathematical wand, turning numbers into neat probabilities between 0 and 1.

It's what makes Logistic Regression tick, giving us a clear 'probabilistic' picture.

3๏ธโƒฃ ๐—›๐—ข๐—ช ๐—ง๐—ข ๐——๐—˜๐—™๐—œ๐—ก๐—˜ ๐—ง๐—›๐—˜ ๐—•๐—˜๐—ฆ๐—ง ๐—™๐—œ๐—ง?
For every parametric ML algorithm, we need a LOSS FUNCTION.

It is our map to find our optimal solution or global minimum.

(hoping there is one! ๐Ÿ˜‰)

โœš ๐—•๐—ข๐—ก๐—จ๐—ฆ - FROM LINEAR TO LOGISTIC REGRESSION
To obtain the sigmoid function, we can derive it from the Linear Regression equation.
๐Ÿ‘3โค1
Understand the power of Data Lakehouse Architecture for ๐—™๐—ฅ๐—˜๐—˜ here...


๐Ÿšจ๐—ข๐—น๐—ฑ ๐˜„๐—ฎ๐˜†
โ€ข Complicated ETL processes for data integration.
โ€ข Silos of data storage, separating structured and unstructured data.
โ€ข High data storage and management costs in traditional warehouses.
โ€ข Limited scalability and delayed access to real-time insights.

โœ…๐—ก๐—ฒ๐˜„ ๐—ช๐—ฎ๐˜†
โ€ข Streamlined data ingestion and processing with integrated SQL capabilities.
โ€ข Unified storage layer accommodating both structured and unstructured data.
โ€ข Cost-effective storage by combining benefits of data lakes and warehouses.
โ€ข Real-time analytics and high-performance queries with SQL integration.

The shift?

Unified Analytics and Real-Time Insights > Siloed and Delayed Data Processing

Leveraging SQL to manage data in a data lakehouse architecture transforms how businesses handle data.

Data Engineering Interview Preparation Resources: https://whatsapp.com/channel/0029Vaovs0ZKbYMKXvKRYi3C

All the best ๐Ÿ‘๐Ÿ‘
๐Ÿ‘1
๐—ง๐—ผ๐—ฝ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—ฃ๐˜†๐˜๐—ต๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—•๐—ฒ๐—ด๐—ถ๐—ป๐—ป๐—ฒ๐—ฟ๐˜€๐Ÿ˜

Python is one of the most versatile and in-demand programming languages today.

Whether youโ€™re a beginner or looking to refresh your coding skills, these beginner-friendly courses will guide you step by step.

๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—™๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜๐Ÿ‘‡:-

https://pdlink.in/4gG4k2q

All The Best ๐ŸŽ‰
djangobookwzy482.pdf
1.2 MB
Python Django pdf ๐Ÿš€
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๐—ฆ๐—ค๐—Ÿ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐Ÿ˜

Best Free SQL Courses to Get Started

1) Introduction to Databases and SQL
2) Advanced Database and SQL
3) Learn SQL 
4) SQL Tutorial

๐‹๐ข๐ง๐ค ๐Ÿ‘‡:- 

https://pdlink.in/3EyjUPt

Enroll For FREE & Get Certified ๐ŸŽ“
๐Ÿ‘1
https://drive.google.com/drive/folders/1SkCOcAS0Kqvuz-MJkkjbFr1GSue6Ms6m

all companies placement material๐Ÿ”ฅ๐Ÿ”ฅ๐Ÿ”ฅ

Share with your friends โฃ๏ธ
https://t.me/sqlspecialist