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Polymorphism in Python ๐Ÿ‘†
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๐Ÿฑ ๐—ฅ๐—ฒ๐—ฎ๐—น-๐—ช๐—ผ๐—ฟ๐—น๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜๐˜€ ๐˜๐—ผ ๐—•๐˜‚๐—ถ๐—น๐—ฑ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ฅ๐—ฒ๐˜€๐˜‚๐—บ๐—ฒ โ€“ ๐—ช๐—ถ๐˜๐—ต ๐—™๐˜‚๐—น๐—น ๐—ง๐˜‚๐˜๐—ผ๐—ฟ๐—ถ๐—ฎ๐—น๐˜€!๐Ÿ˜

Are you ready to build real-world tech projects that donโ€™t just look good on your resume, but actually teach you practical, job-ready skills?๐Ÿง‘โ€๐Ÿ’ป๐Ÿ“Œ

Hereโ€™s a curated list of 5 high-value development tutorials โ€” covering everything from full-stack development and real-time chat apps to AI form builders and reinforcement learningโœจ๏ธ๐Ÿ’ป

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/3UtCSLO

Theyโ€™re real, portfolio-worthy projects you can start todayโœ…๏ธ
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โŒจ๏ธ MongoDB Cheat Sheet

MongoDB is a flexible, document-orientated, NoSQL database program that can scale to any enterprise volume without compromising search performance.


This Post includes a MongoDB cheat sheet to make it easy for our followers to work with MongoDB.

Working with databases
Working with rows
Working with Documents
Querying data from documents
Modifying data in documents
Searching
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๐Ÿ“– Data Engineering Roadmap 2025

๐Ÿญ. ๐—–๐—น๐—ผ๐˜‚๐—ฑ ๐—ฆ๐—ค๐—Ÿ (๐—”๐—ช๐—ฆ ๐—ฅ๐——๐—ฆ, ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ ๐—–๐—น๐—ผ๐˜‚๐—ฑ ๐—ฆ๐—ค๐—Ÿ, ๐—”๐˜‡๐˜‚๐—ฟ๐—ฒ ๐—ฆ๐—ค๐—Ÿ)

๐Ÿ’ก Why? Cloud-managed databases are the backbone of modern data platforms.

โœ… Serverless, scalable, and cost-efficient
โœ… Automated backups & high availability
โœ… Works seamlessly with cloud data pipelines

๐Ÿฎ. ๐—ฑ๐—ฏ๐˜ (๐——๐—ฎ๐˜๐—ฎ ๐—•๐˜‚๐—ถ๐—น๐—ฑ ๐—ง๐—ผ๐—ผ๐—น) โ€“ ๐—ง๐—ต๐—ฒ ๐—™๐˜‚๐˜๐˜‚๐—ฟ๐—ฒ ๐—ผ๐—ณ ๐—˜๐—Ÿ๐—ง

๐Ÿ’ก Why? Transform data inside your warehouse (Snowflake, BigQuery, Redshift).

โœ… SQL-based transformation โ€“ easy to learn
โœ… Version control & modular data modeling
โœ… Automates testing & documentation

๐Ÿฏ. ๐—”๐—ฝ๐—ฎ๐—ฐ๐—ต๐—ฒ ๐—”๐—ถ๐—ฟ๐—ณ๐—น๐—ผ๐˜„ โ€“ ๐—ช๐—ผ๐—ฟ๐—ธ๐—ณ๐—น๐—ผ๐˜„ ๐—ข๐—ฟ๐—ฐ๐—ต๐—ฒ๐˜€๐˜๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป

๐Ÿ’ก Why? Automate and schedule complex ETL/ELT workflows.

โœ… DAG-based orchestration for dependency management
โœ… Integrates with cloud services (AWS, GCP, Azure)
โœ… Highly scalable & supports parallel execution

๐Ÿฐ. ๐——๐—ฒ๐—น๐˜๐—ฎ ๐—Ÿ๐—ฎ๐—ธ๐—ฒ โ€“ ๐—ง๐—ต๐—ฒ ๐—ฃ๐—ผ๐˜„๐—ฒ๐—ฟ ๐—ผ๐—ณ ๐—”๐—–๐—œ๐—— ๐—ถ๐—ป ๐——๐—ฎ๐˜๐—ฎ ๐—Ÿ๐—ฎ๐—ธ๐—ฒ๐˜€

๐Ÿ’ก Why? Solves data consistency & reliability issues in Apache Spark & Databricks.
โœ… Supports ACID transactions in data lakes
โœ… Schema evolution & time travel
โœ… Enables incremental data processing

๐Ÿฑ. ๐—–๐—น๐—ผ๐˜‚๐—ฑ ๐——๐—ฎ๐˜๐—ฎ ๐—ช๐—ฎ๐—ฟ๐—ฒ๐—ต๐—ผ๐˜‚๐˜€๐—ฒ๐˜€ (๐—ฆ๐—ป๐—ผ๐˜„๐—ณ๐—น๐—ฎ๐—ธ๐—ฒ, ๐—•๐—ถ๐—ด๐—ค๐˜‚๐—ฒ๐—ฟ๐˜†, ๐—ฅ๐—ฒ๐—ฑ๐˜€๐—ต๐—ถ๐—ณ๐˜)

๐Ÿ’ก Why? Centralized, scalable, and powerful for analytics.
โœ… Handles petabytes of data efficiently
โœ… Pay-per-use pricing & serverless architecture

๐Ÿฒ. ๐—”๐—ฝ๐—ฎ๐—ฐ๐—ต๐—ฒ ๐—ž๐—ฎ๐—ณ๐—ธ๐—ฎ โ€“ ๐—ฅ๐—ฒ๐—ฎ๐—น-๐—ง๐—ถ๐—บ๐—ฒ ๐—ฆ๐˜๐—ฟ๐—ฒ๐—ฎ๐—บ๐—ถ๐—ป๐—ด

๐Ÿ’ก Why? For real-time event-driven architectures.
โœ… High-throughput

๐Ÿณ. ๐—ฃ๐˜†๐˜๐—ต๐—ผ๐—ป & ๐—ฆ๐—ค๐—Ÿ โ€“ ๐—ง๐—ต๐—ฒ ๐—–๐—ผ๐—ฟ๐—ฒ ๐—ผ๐—ณ ๐——๐—ฎ๐˜๐—ฎ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด

๐Ÿ’ก Why? Every data engineer must master these!

โœ… SQL for querying, transformations & performance tuning
โœ… Python for automation, data processing, and API integrations

๐Ÿด. ๐——๐—ฎ๐˜๐—ฎ๐—ฏ๐—ฟ๐—ถ๐—ฐ๐—ธ๐˜€ โ€“ ๐—จ๐—ป๐—ถ๐—ณ๐—ถ๐—ฒ๐—ฑ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€ & ๐—”๐—œ

๐Ÿ’ก Why? The go-to platform for big data processing & machine learning on the cloud.

โœ… Built on Apache Spark for fast distributed computing
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๐Ÿฏ ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—ฆ๐—ค๐—Ÿ ๐—ฌ๐—ผ๐˜‚๐—ง๐˜‚๐—ฏ๐—ฒ ๐—ฃ๐—น๐—ฎ๐˜†๐—น๐—ถ๐˜€๐˜๐˜€ ๐—ง๐—ต๐—ฎ๐˜ ๐—ช๐—ถ๐—น๐—น ๐— ๐—ฎ๐—ธ๐—ฒ ๐—ฌ๐—ผ๐˜‚ ๐—ฎ ๐—ค๐˜‚๐—ฒ๐—ฟ๐˜† ๐—ฃ๐—ฟ๐—ผ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

Still stuck Googling โ€œWhat is SQL?โ€ every time you start a new project?๐Ÿ’ต

Youโ€™re not alone. Many beginners bounce between tutorials without ever feeling confident writing SQL queries on their own.๐Ÿ‘จโ€๐Ÿ’ปโœจ๏ธ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/4f1F6LU

Letโ€™s dive into the ones that are actually worth your timeโœ…๏ธ
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