Data Engineers
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๐ŸŒˆ Greetings from PVR CLOUD TECH!

๐Ÿ“” Course : Azure Data Engineering

Topic's:
(Azure Databricks(PySpark)+Azure DataFactory + Synapse Analytics + Microsoft Fabric)

Course content:

https://drive.google.com/file/d/1YufWV0Ru6SyYt-oNf5Mi5H8mmeV_kfP-/view

๐Ÿ—“ Date: 7th July 2025

๐Ÿ•— Time: 8 PM to 9 PM IST | Monday

Duration : 3 Months

๐Ÿ”ฅ Click here to Register For those who are interested :

https://docs.google.com/forms/d/e/1FAIpQLSfgbxFw7w1FLSdQJBvQ8UW1C__H9erZjbnkmYQx525Zk-uvOg/viewform

๐Ÿ€ Also join our WhatsApp community Group :

https://chat.whatsapp.com/Cdr0oDSoaGZIyoIAkmlOAa

๐Ÿ€ Also follow the below WhatsApp channel

https://www.whatsapp.com/channel/0029Vb60rGU8V0thkpbFFW2n

Thanks,
PVR Cloud Tech
๐Ÿ“ฑ +91-9346060794
โค2
๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—•๐˜‚๐—ถ๐—น๐—ฑ ๐—ฎ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ๐—ฃ๐—ผ๐—ฟ๐˜๐—ณ๐—ผ๐—น๐—ถ๐—ผ ๐—ง๐—ต๐—ฎ๐˜ ๐—š๐—ฒ๐˜๐˜€ ๐—ฌ๐—ผ๐˜‚ ๐—›๐—ถ๐—ฟ๐—ฒ๐—ฑ?๐Ÿ˜

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๐Ÿš€ Key Skills for Aspiring Tech Specialists

๐Ÿ“Š Data Analyst:
- Proficiency in SQL for database querying
- Advanced Excel for data manipulation
- Programming with Python or R for data analysis
- Statistical analysis to understand data trends
- Data visualization tools like Tableau or PowerBI
- Data preprocessing to clean and structure data
- Exploratory data analysis techniques

๐Ÿง  Data Scientist:
- Strong knowledge of Python and R for statistical analysis
- Machine learning for predictive modeling
- Deep understanding of mathematics and statistics
- Data wrangling to prepare data for analysis
- Big data platforms like Hadoop or Spark
- Data visualization and communication skills
- Experience with A/B testing frameworks

๐Ÿ— Data Engineer:
- Expertise in SQL and NoSQL databases
- Experience with data warehousing solutions
- ETL (Extract, Transform, Load) process knowledge
- Familiarity with big data tools (e.g., Apache Spark)
- Proficient in Python, Java, or Scala
- Knowledge of cloud services like AWS, GCP, or Azure
- Understanding of data pipeline and workflow management tools

๐Ÿค– Machine Learning Engineer:
- Proficiency in Python and libraries like scikit-learn, TensorFlow
- Solid understanding of machine learning algorithms
- Experience with neural networks and deep learning frameworks
- Ability to implement models and fine-tune their parameters
- Knowledge of software engineering best practices
- Data modeling and evaluation strategies
- Strong mathematical skills, particularly in linear algebra and calculus

๐Ÿง  Deep Learning Engineer:
- Expertise in deep learning frameworks like TensorFlow or PyTorch
- Understanding of Convolutional and Recurrent Neural Networks
- Experience with GPU computing and parallel processing
- Familiarity with computer vision and natural language processing
- Ability to handle large datasets and train complex models
- Research mindset to keep up with the latest developments in deep learning

๐Ÿคฏ AI Engineer:
- Solid foundation in algorithms, logic, and mathematics
- Proficiency in programming languages like Python or C++
- Experience with AI technologies including ML, neural networks, and cognitive computing
- Understanding of AI model deployment and scaling
- Knowledge of AI ethics and responsible AI practices
- Strong problem-solving and analytical skills

๐Ÿ”Š NLP Engineer:
- Background in linguistics and language models
- Proficiency with NLP libraries (e.g., NLTK, spaCy)
- Experience with text preprocessing and tokenization
- Understanding of sentiment analysis, text classification, and named entity recognition
- Familiarity with transformer models like BERT and GPT
- Ability to work with large text datasets and sequential data

๐ŸŒŸ Embrace the world of data and AI, and become the architect of tomorrow's technology!
โค1๐Ÿ‘1
๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—œ๐—ป-๐——๐—ฒ๐—บ๐—ฎ๐—ป๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ โ€” ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ โ€” ๐——๐—ถ๐—ฟ๐—ฒ๐—ฐ๐˜๐—น๐˜† ๐—ณ๐—ฟ๐—ผ๐—บ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ?๐Ÿ˜

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โค1
Planning for Data Science or Data Engineering Interview.

Focus on SQL & Python first. Here are some important questions which you should know.

๐ˆ๐ฆ๐ฉ๐จ๐ซ๐ญ๐š๐ง๐ญ ๐’๐๐‹ ๐ช๐ฎ๐ž๐ฌ๐ญ๐ข๐จ๐ง๐ฌ

1- Find out nth Order/Salary from the tables.
2- Find the no of output records in each join from given Table 1 & Table 2
3- YOY,MOM Growth related questions.
4- Find out Employee ,Manager Hierarchy (Self join related question) or
Employees who are earning more than managers.
5- RANK,DENSERANK related questions
6- Some row level scanning medium to complex questions using CTE or recursive CTE, like (Missing no /Missing Item from the list etc.)
7- No of matches played by every team or Source to Destination flight combination using CROSS JOIN.
8-Use window functions to perform advanced analytical tasks, such as calculating moving averages or detecting outliers.
9- Implement logic to handle hierarchical data, such as finding all descendants of a given node in a tree structure.
10-Identify and remove duplicate records from a table.

๐ˆ๐ฆ๐ฉ๐จ๐ซ๐ญ๐š๐ง๐ญ ๐๐ฒ๐ญ๐ก๐จ๐ง ๐ช๐ฎ๐ž๐ฌ๐ญ๐ข๐จ๐ง๐ฌ

1- Reversing a String using an Extended Slicing techniques.
2- Count Vowels from Given words .
3- Find the highest occurrences of each word from string and sort them in order.
4- Remove Duplicates from List.
5-Sort a List without using Sort keyword.
6-Find the pair of numbers in this list whose sum is n no.
7-Find the max and min no in the list without using inbuilt functions.
8-Calculate the Intersection of Two Lists without using Built-in Functions
9-Write Python code to make API requests to a public API (e.g., weather API) and process the JSON response.
10-Implement a function to fetch data from a database table, perform data manipulation, and update the database.

Join for more: https://t.me/datasciencefun

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
โค1
๐—•๐—ฒ๐—ฐ๐—ผ๐—บ๐—ฒ ๐—ฎ ๐——๐—ฎ๐˜๐—ฎ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ ๐˜„๐—ถ๐˜๐—ต ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜โ€™๐˜€ ๐—™๐—ฅ๐—˜๐—˜ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป๐—ถ๐—ป๐—ด ๐—ฃ๐—ฎ๐˜๐—ต (๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ ๐—ฅ๐—ฒ๐—ฎ๐—ฑ๐˜†!) ๐Ÿ˜

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โค1
๐Ÿ‘1
๐—จ๐—ฝ๐˜€๐—ธ๐—ถ๐—น๐—น ๐—™๐—ฎ๐˜€๐˜: ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ ๐˜„๐—ถ๐˜๐—ต ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜-๐—•๐—ฎ๐˜€๐—ฒ๐—ฑ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ถ๐—ป ๐—๐˜‚๐˜€๐˜ ๐Ÿฏ๐Ÿฌ ๐——๐—ฎ๐˜†๐˜€!๐Ÿ˜

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โค1
Python Detailed Roadmap ๐Ÿš€

๐Ÿ“Œ 1. Basics
โ—ผ Data Types & Variables
โ—ผ Operators & Expressions
โ—ผ Control Flow (if, loops)

๐Ÿ“Œ 2. Functions & Modules
โ—ผ Defining Functions
โ—ผ Lambda Functions
โ—ผ Importing & Creating Modules

๐Ÿ“Œ 3. File Handling
โ—ผ Reading & Writing Files
โ—ผ Working with CSV & JSON

๐Ÿ“Œ 4. Object-Oriented Programming (OOP)
โ—ผ Classes & Objects
โ—ผ Inheritance & Polymorphism
โ—ผ Encapsulation

๐Ÿ“Œ 5. Exception Handling
โ—ผ Try-Except Blocks
โ—ผ Custom Exceptions

๐Ÿ“Œ 6. Advanced Python Concepts
โ—ผ List & Dictionary Comprehensions
โ—ผ Generators & Iterators
โ—ผ Decorators

๐Ÿ“Œ 7. Essential Libraries
โ—ผ NumPy (Arrays & Computations)
โ—ผ Pandas (Data Analysis)
โ—ผ Matplotlib & Seaborn (Visualization)

๐Ÿ“Œ 8. Web Development & APIs
โ—ผ Web Scraping (BeautifulSoup, Scrapy)
โ—ผ API Integration (Requests)
โ—ผ Flask & Django (Backend Development)

๐Ÿ“Œ 9. Automation & Scripting
โ—ผ Automating Tasks with Python
โ—ผ Working with Selenium & PyAutoGUI

๐Ÿ“Œ 10. Data Science & Machine Learning
โ—ผ Data Cleaning & Preprocessing
โ—ผ Scikit-Learn (ML Algorithms)
โ—ผ TensorFlow & PyTorch (Deep Learning)

๐Ÿ“Œ 11. Projects
โ—ผ Build Real-World Applications
โ—ผ Showcase on GitHub

๐Ÿ“Œ 12. โœ… Apply for Jobs
โ—ผ Strengthen Resume & Portfolio
โ—ผ Prepare for Technical Interviews

Like for more โค๏ธ๐Ÿ’ช
โค4
๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜โ€™๐˜€ ๐—™๐—ฅ๐—˜๐—˜ ๐—”๐—œ ๐—”๐—ด๐—ฒ๐—ป๐˜๐˜€ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ โ€“ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป ๐—›๐—ผ๐˜„ ๐˜๐—ต๐—ฒ ๐—™๐˜‚๐˜๐˜‚๐—ฟ๐—ฒ ๐—ผ๐—ณ ๐—”๐—œ ๐—ช๐—ผ๐—ฟ๐—ธ๐˜€๐Ÿ˜

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โค2
Top 10 Python functions that are commonly used in data analysis

import pandas as pd: This function is used to import the Pandas library, which is essential for data manipulation and analysis.

read_csv(): This function from Pandas is used to read data from CSV files into a DataFrame, a primary data structure for data analysis.

head(): It allows you to quickly preview the first few rows of a DataFrame to understand its structure.

describe(): This function provides summary statistics of the numeric columns in a DataFrame, such as mean, standard deviation, and percentiles.

groupby(): It's used to group data by one or more columns, enabling aggregation and analysis within those groups.

pivot_table(): This function helps in creating pivot tables, allowing you to summarize and reshape data for analysis.

fillna(): Useful for filling missing values in a DataFrame with a specified value or a calculated one (e.g., mean or median).

apply(): This function is used to apply custom functions to DataFrame columns or rows, which is handy for data transformation.

plot(): It's part of the Matplotlib library and is used for creating various data visualizations, such as line plots, bar charts, and scatter plots.

merge(): This function is used for combining two or more DataFrames based on a common column or index, which is crucial for joining datasets during analysis.

These functions are essential tools for any data analyst working with Python for data analysis tasks.

Hope it helps :)
โค3
Forwarded from Artificial Intelligence
๐—ช๐—ถ๐—ฝ๐—ฟ๐—ผโ€™๐˜€ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—”๐—ฐ๐—ฐ๐—ฒ๐—น๐—ฒ๐—ฟ๐—ฎ๐˜๐—ผ๐—ฟ: ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—™๐—ฎ๐˜€๐˜-๐—ง๐—ฟ๐—ฎ๐—ฐ๐—ธ ๐˜๐—ผ ๐—ฎ ๐——๐—ฎ๐˜๐—ฎ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ!๐Ÿ˜

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โค1
Essential Data Science Concepts Everyone Should Know:

1. Data Types and Structures:

โ€ข Categorical: Nominal (unordered, e.g., colors) and Ordinal (ordered, e.g., education levels)

โ€ข Numerical: Discrete (countable, e.g., number of children) and Continuous (measurable, e.g., height)

โ€ข Data Structures: Arrays, Lists, Dictionaries, DataFrames (for organizing and manipulating data)

2. Descriptive Statistics:

โ€ข Measures of Central Tendency: Mean, Median, Mode (describing the typical value)

โ€ข Measures of Dispersion: Variance, Standard Deviation, Range (describing the spread of data)

โ€ข Visualizations: Histograms, Boxplots, Scatterplots (for understanding data distribution)

3. Probability and Statistics:

โ€ข Probability Distributions: Normal, Binomial, Poisson (modeling data patterns)

โ€ข Hypothesis Testing: Formulating and testing claims about data (e.g., A/B testing)

โ€ข Confidence Intervals: Estimating the range of plausible values for a population parameter

4. Machine Learning:

โ€ข Supervised Learning: Regression (predicting continuous values) and Classification (predicting categories)

โ€ข Unsupervised Learning: Clustering (grouping similar data points) and Dimensionality Reduction (simplifying data)

โ€ข Model Evaluation: Accuracy, Precision, Recall, F1-score (assessing model performance)

5. Data Cleaning and Preprocessing:

โ€ข Missing Value Handling: Imputation, Deletion (dealing with incomplete data)

โ€ข Outlier Detection and Removal: Identifying and addressing extreme values

โ€ข Feature Engineering: Creating new features from existing ones (e.g., combining variables)

6. Data Visualization:

โ€ข Types of Charts: Bar charts, Line charts, Pie charts, Heatmaps (for communicating insights visually)

โ€ข Principles of Effective Visualization: Clarity, Accuracy, Aesthetics (for conveying information effectively)

7. Ethical Considerations in Data Science:

โ€ข Data Privacy and Security: Protecting sensitive information

โ€ข Bias and Fairness: Ensuring algorithms are unbiased and fair

8. Programming Languages and Tools:

โ€ข Python: Popular for data science with libraries like NumPy, Pandas, Scikit-learn

โ€ข R: Statistical programming language with strong visualization capabilities

โ€ข SQL: For querying and manipulating data in databases

9. Big Data and Cloud Computing:

โ€ข Hadoop and Spark: Frameworks for processing massive datasets

โ€ข Cloud Platforms: AWS, Azure, Google Cloud (for storing and analyzing data)

10. Domain Expertise:

โ€ข Understanding the Data: Knowing the context and meaning of data is crucial for effective analysis

โ€ข Problem Framing: Defining the right questions and objectives for data-driven decision making

Bonus:

โ€ข Data Storytelling: Communicating insights and findings in a clear and engaging manner

Best Data Science & Machine Learning Resources: https://topmate.io/coding/914624

ENJOY LEARNING ๐Ÿ‘๐Ÿ‘
โค1
๐—›๐—ถ๐—ฑ๐—ฑ๐—ฒ๐—ป ๐—š๐—ฒ๐—บ ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐—ณ๐—ฟ๐—ผ๐—บ ๐— ๐—œ๐—ง, ๐—›๐—ฎ๐—ฟ๐˜ƒ๐—ฎ๐—ฟ๐—ฑ & ๐—ฆ๐˜๐—ฎ๐—ป๐—ณ๐—ผ๐—ฟ๐—ฑ!๐Ÿ˜

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Data Engineering Roadmap
โค4
๐Ÿฏ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€ ๐˜๐—ผ ๐—ฆ๐˜๐—ฎ๐—ฟ๐˜ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ!๐Ÿ˜

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Most Asked SQL Interview Questions at MAANG Companies๐Ÿ”ฅ๐Ÿ”ฅ

Preparing for an SQL Interview at MAANG Companies? Here are some crucial SQL Questions you should be ready to tackle:

1. How do you retrieve all columns from a table?

SELECT * FROM table_name;

2. What SQL statement is used to filter records?

SELECT * FROM table_name
WHERE condition;

The WHERE clause is used to filter records based on a specified condition.

3. How can you join multiple tables? Describe different types of JOINs.

SELECT columns
FROM table1
JOIN table2 ON table1.column = table2.column
JOIN table3 ON table2.column = table3.column;

Types of JOINs:

1. INNER JOIN: Returns records with matching values in both tables

SELECT * FROM table1
INNER JOIN table2 ON table1.column = table2.column;

2. LEFT JOIN: Returns all records from the left table & matched records from the right table. Unmatched records will have NULL values.

SELECT * FROM table1
LEFT JOIN table2 ON table1.column = table2.column;

3. RIGHT JOIN: Returns all records from the right table & matched records from the left table. Unmatched records will have NULL values.

SELECT * FROM table1
RIGHT JOIN table2 ON table1.column = table2.column;

4. FULL JOIN: Returns records when there is a match in either left or right table. Unmatched records will have NULL values.

SELECT * FROM table1
FULL JOIN table2 ON table1.column = table2.column;

4. What is the difference between WHERE & HAVING clauses?

WHERE: Filters records before any groupings are made.

SELECT * FROM table_name
WHERE condition;

HAVING: Filters records after groupings are made.

SELECT column, COUNT(*)
FROM table_name
GROUP BY column
HAVING COUNT(*) > value;

5. How do you calculate average, sum, minimum & maximum values in a column?

Average: SELECT AVG(column_name) FROM table_name;

Sum: SELECT SUM(column_name) FROM table_name;

Minimum: SELECT MIN(column_name) FROM table_name;

Maximum: SELECT MAX(column_name) FROM table_name;

Here you can find essential SQL Interview Resources๐Ÿ‘‡
https://t.me/mysqldata

Like this post if you need more ๐Ÿ‘โค๏ธ

Hope it helps :)
โค2
Forwarded from Artificial Intelligence
๐Ÿฒ ๐—ฅ๐—ฒ๐—ฎ๐—น-๐—ช๐—ผ๐—ฟ๐—น๐—ฑ ๐—ฆ๐—ค๐—Ÿ ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜๐˜€ ๐˜๐—ผ ๐—•๐—ผ๐—ผ๐˜€๐˜ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ ๐—ฃ๐—ผ๐—ฟ๐˜๐—ณ๐—ผ๐—น๐—ถ๐—ผ (๐—™๐—ฅ๐—˜๐—˜ ๐——๐—ฎ๐˜๐—ฎ๐˜€๐—ฒ๐˜๐˜€!)๐Ÿ˜

๐ŸŽฏ Want to level up your SQL skills with real business scenarios?๐Ÿ“š

These 6 hands-on SQL projects will help you go beyond basic SELECT queries and practice what hiring managers actually care about๐Ÿ‘จโ€๐Ÿ’ป๐Ÿ“Œ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/40kF1x0

Save this post โ€” even completing 1 project can power up your SQL profile!โœ…๏ธ
โค1
What is the difference between data scientist, data engineer, data analyst and business intelligence?

๐Ÿง‘๐Ÿ”ฌ Data Scientist
Focus: Using data to build models, make predictions, and solve complex problems.
Cleans and analyzes data
Builds machine learning models
Answers โ€œWhy is this happening?โ€ and โ€œWhat will happen next?โ€
Works with statistics, algorithms, and coding (Python, R)
Example: Predict which customers are likely to cancel next month

๐Ÿ› ๏ธ Data Engineer
Focus: Building and maintaining the systems that move and store data.
Designs and builds data pipelines (ETL/ELT)
Manages databases, data lakes, and warehouses
Ensures data is clean, reliable, and ready for others to use
Uses tools like SQL, Airflow, Spark, and cloud platforms (AWS, Azure, GCP)
Example: Create a system that collects app data every hour and stores it in a warehouse

๐Ÿ“Š Data Analyst
Focus: Exploring data and finding insights to answer business questions.
Pulls and visualizes data (dashboards, reports)
Answers โ€œWhat happened?โ€ or โ€œWhatโ€™s going on right now?โ€
Works with SQL, Excel, and tools like Tableau or Power BI
Less coding and modeling than a data scientist
Example: Analyze monthly sales and show trends by region

๐Ÿ“ˆ Business Intelligence (BI) Professional
Focus: Helping teams and leadership understand data through reports and dashboards.
Designs dashboards and KPIs (key performance indicators)
Translates data into stories for non-technical users
Often overlaps with data analyst role but more focused on reporting
Tools: Power BI, Looker, Tableau, Qlik
Example: Build a dashboard showing company performance by department

๐Ÿงฉ Summary Table
Data Scientist - What will happen? Tools: Python, R, ML tools, predictions & models
Data Engineer - How does the data move and get stored? Tools: SQL, Spark, cloud tools, infrastructure & pipelines
Data Analyst - What happened? Tools: SQL, Excel, BI tools, reports & exploration
BI Professional - How can we see business performance clearly? Tools: Power BI, Tableau, dashboards & insights for decision-makers

๐ŸŽฏ In short:
Data Engineers build the roads.
Data Scientists drive smart cars to predict traffic.
Data Analysts look at traffic data to see patterns.
BI Professionals show everyone the traffic report on a screen.
โค2