Programming, data science, ML - free courses by Big Data Specialist

🗄 SQL vs. NoSQL: Choosing the Right Database 🗄

In the ever-evolving world of data, picking the right database can make or break your project. Here’s an easy-to-digest guide to help you decide between SQL and NoSQL databases:

1️⃣ SQL Databases

Structured and reliable, SQL databases are the backbone of systems that need organization and consistency.

✅ Key Features:

Data is stored in tables, with rows and columns.
Relationships between data are predefined and strictly enforced (think foreign keys).
Uses Structured Query Language (SQL) for writing and querying data.
Ensures ACID compliance (Atomicity, Consistency, Isolation, Durability), crucial for transactions.

📊 Best For:

Banking systems (e.g., tracking account balances 💳).
Inventory management (e.g., ensuring stock accuracy 🏬).
Customer Relationship Management (CRM) tools.

📖 Popular Databases:

MySQL
PostgreSQL
Microsoft SQL Server
Oracle

2️⃣ NoSQL Databases

Born from the need to handle modern, complex, and massive datasets, NoSQL databases embrace flexibility and scalability.

✅ Key Features:

Data can be unstructured, semi-structured, or schema-less (e.g., JSON, key-value pairs).
Designed for horizontal scaling—easy to add more servers as data grows.
Prioritizes speed and flexibility over strict consistency (often choosing eventual consistency).
Supports various models:
Document-based (MongoDB)
Key-value stores (Redis)
Wide-column stores (Cassandra)
Graph databases (Neo4j).

📊 Best For:

Social media platforms (e.g., storing dynamic user data 📱).
IoT and real-time applications (e.g., sensor data 🚀).
Big Data (e.g., distributed analytics).

📖 Popular Databases:

MongoDB
Cassandra
DynamoDB
Neo4j

⚔️ SQL vs. NoSQL: How to Decide?

Choose SQL when:
✅ Your data is highly structured and relationships are important.
✅ You need multi-row transactions (e.g., financial systems).
✅ Complex queries and analytics are required.

Choose NoSQL when:
✅ Your data changes frequently or lacks a fixed structure.
✅ You need to handle huge datasets across distributed systems.
✅ Speed and flexibility are more critical than strict consistency.
✨ Fun Analogy:

SQL = A traditional library 🏛: Books are categorized neatly by genre, author, and title for easy access.
NoSQL = A dynamic art studio 🎨: Ideas flow freely, and you can adapt on the go without predefined rules.

🔍 Pro Insight:
Many modern systems use both SQL and NoSQL databases to leverage the strengths of each! For example:

SQL for transactional data.
NoSQL for real-time, scalable components.

Which database fits your next project? 🤔 Let us know in the comments! 🌟

Tesla's Robot takes autonomy to the next level!

It can locate its own charger, plug itself in, and resume work once fully charged—no human intervention needed. ⚡️

A glimpse into the future of truly independent robotics.

OLAP (Online analytical processing) basic explanation

Do you like it? We made it ourselves 😊

Google Cloud Professional Cloud Architect: GCP Certification

Google Cloud Professional Cloud Architect Certification. Become a GCP Cloud Architect, Latest GCP Exam and Case Studies.

Rating ⭐️: 4.3 out 5
Students 👨‍🎓 : 18,732
Duration ⏰ : 22 hours on-demand video
👩‍💻 16 articles
⬇️ 81 downloadable resources
Created by 👨‍🏫: TECHlINK

🔗 COURSE LINK

⚠️ Its free for first 1000 enrollments only!


#google_cloud #GCP
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Web Scraping with BeautifulSoup and Python

🆓 Free Online Course
💻 Lecture Video
⏰ Duration : More than 1 hour
🏃‍♂️ Self paced
👩‍🏫 Teacher: Arham Noman


🔗 Course Link


#web_scraping #beautifulSoup
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Kotlin free courses

Kotlin Course - Tutorial for Beginners
🎬 45 video lesson
Duration ⏰: 2-3 hours worth of material
🏃‍♂️ Self paced
Taught by: freeCodeCamp.org
🔗 Course Link

Kotlin Programming - A Basic Introduction
Rating ⭐️: 4.5 out of 5
Students 👨‍🎓: 486
Duration ⏰: 57mins
Created by: Ricky Wahowa
🔗 Course Link

Android Instagram App with Firebase - Kotlin Android Studio Tutorial - Android Final Year Project Tutorials (fyp projects) - Kotlin Project Tutorials
🎬 16 video lesson
Duration ⏰: 8 hours worth of material
🏃‍♂️ Self paced
Teacher: Coding Cafe
🔗 Course Link

One hour Kotlin guide for beginners
Rating ⭐️: 4.3 out of 5
Students 👨‍🎓: 17,985
Duration ⏰: 1hr 20min of on-demand video
Created by: Tutlets Kkang
🔗 Course Link

Android Basics in Kotlin
📄 Activities
☢️ Quizes
Modules ⏰: 6
🏃‍♂️ Self paced
Teacher: AndroidDev
Source: developers
🔗 Course Link

Kotlin at Light Speed
Rating ⭐️: 4.9 out of 5
Students 👨‍🎓: 1,288
Duration ⏰: 1hr 49min of on-demand video
Created by: Daniel Ciocîrlan
🔗 Course Link

Android Development(Kotlin) Full Course For Beginners
🎬 1 video lesson
Duration ⏰: 12 hours
🏃‍♂️ Self paced
Resource: Youtube
🔗 Course Link

Mastering Kotlin: a Fast Guide to Null Safety (in 30 min)
Rating ⭐️: 4.4 out of 5
Students 👨‍🎓: 12,871
Duration ⏰: 29min of on-demand video
Created by: Skill Centric
🔗 Course Link

Kotlin tips
🎬 12 video lesson
🏃‍♂️ Self paced
Resource: kotlinlang.org
🔗 Course Link


Books
Atomic Kotlin
Kotlin documentation
Learn Kotlin for Android Development
Kotlin Cookbook


#Kotlin
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Programming Abstractions in C++ - Stanford University

Learn about programming abstractions in C++ in this tutorial series

🆓 Free Online Course
🎬 Video lectures
🧮 Handouts
🏃‍♂️ Self paced
📶 Assignments
Source: Stanford University

🔗 Course Link

#Cplusplus
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Please read

I know I’ve been a bit inactive lately due to working overtime (we’ve been developing a unique ML model that identifies ANY clothing in an image and shows you where to buy it with prices—pretty unique 😅), but to keep this community thriving, I really need your engagement and feedback.

If we can’t keep it active together, there might not be much point in continuing, since I’m doing all of this for you (no earning whatsoever) and it takes too much time.

Reminder that I've created 15 telegram channels for each field of IT so everyone can find what they need.
Also we have spent last 2 years building a web platform for you, to get any learning materials for free (almost finished)

So please make sure to answer on all the questions I ask here (including the previous one about our @ai_revolution_bds channel).

Your support really makes all the difference.

Your Big Data Specialist.

👉 Truth Terminal, an AI bot, became a millionaire. Yes you read it right 😅

🤯 Created by New Zealand designer Andy Ayrey, Truth Terminal quickly gained attention for its meme-heavy posts and satirical commentary.

✴️ Bot has it's own Twitter account where he posted some joks.

🤖 But it didn’t stop at jokes. The bot began receiving and promoting meme coins like GOAT, which saw massive value growth.

🤑 Today, its portfolio is worth over $1.5 million, making Truth Terminal the first known AI millionaire!

Machine Learning for Healthcare

🆓 Free Online Course
💻 Lecture Videos
⏰ Duration : More than 1 hour
🏃‍♂️ Self paced
👩‍🏫 Teacher: Prof. Peter Szolovits and Prof. David Sontag
Source : MIT

🔗 Course Link


#programming #machinelearning
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C++ free courses

INTRODUCTION TO C++
📄 Lecture Notes
☢️ Assignments
Duration ⏰: 4 weeks
🏃‍♂️ Self paced
Teacher: Jesse Dunietz, Geza Kovacs, John Marrero
Source: MIT
🔗 Course Link

Learn C++ Programming The Easy Way
Rating ⭐️: 4.5 out of 5
Students 👨‍🎓: 1406
Duration ⏰: 1hr 59min
Created by: W S
🔗 Course Link

C++ - Programming Language | Tutorial
🎬 31 video lesson
Duration ⏰: 4-5 hours worth of material
🏃‍♂️ Self paced
Teacher: Mike Dane
Resource: Class Central
🔗 Course Link

C++ Tutorial for Complete Beginners
Rating ⭐️: 4.5 out of 5
Students 👨‍🎓: 580,274
Duration ⏰: 17hr 59min
Created by: John Purcell
🔗 Course Link

C++ Tutorials
🎬 102 video lesson
Duration ⏰: 23 hours worth of material
🏃‍♂️ Self paced
Teacher: Caleb Curry
🔗 Course Link

Learn C/C++ with Arduino IDE
Rating ⭐️: 4.5 out of 5
Students 👨‍🎓: 10256
Duration ⏰: 53min of on-demand video
Created by: shrey Sharma
🔗 Course Link

C++ Programming Tutorials
🎬 73 video lesson
🏃‍♂️ Self paced
Resource: Youtube
🔗 Course Link

Error reporting in C++
Rating ⭐️: 4.7 out of 5
Students 👨‍🎓: 709
Duration ⏰: 38 min of on-demand video
Created by: Dimitris Platis
🔗 Course Link

Learn Basic Concepts of C++ (No Video)
⏳Modules: 6
☢️ Exercises, Programs
🏃‍♂️ Self paced
Resource: Guru99
🔗 Course Link

Introduction to C++ (No Video)
⏳Modules: 3
☢️ Examples, Quizes
🏃‍♂️ Self paced
Resource: developers.google
🔗 Course Link

LEARN C++ (No Video)
⏳Modules: 23
☢️ Quizes
🏃‍♂️ Self paced
Resource: learncpp
🔗 Course Link

Book
The C++ Language Tutorial
The C++ Programming Language
A Complete Guide to Programming in C++


#Cplusplus
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Python for Penetration Testing

These video courses teach you penetration testing with Python. Also known as a pen test, penetration testing is a simulated attack against a system to check for vulnerabilities.

In this course, you'll learn about sockets, create a TCP server and client, build an Nmap scanner, and other tools and techniques that pen testers use daily.

🆓 Free Online Course
⏰ Duration : More than 1 hour
🏃‍♂️ Self paced
✅ Certification available

🔗 Course Link


#Python #Penetration_Testing
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Video describing current situation in IT industry...

It's unreal how things have changed in just 3 years.

Is it like this in your country as well?

Build local LLM applications using Python and Ollama

Learn to create LLM applications in your system using Ollama and LangChain in Python | Completely private and secure

Rating ⭐️: 4.7 out 5
Students 👨‍🎓 : 2,534
Duration ⏰ : 2 hours on-demand video
👩‍💻 2 articles
2 downloadable resources
Created by 👨‍🏫: Star Tech

🔗 COURSE LINK

⚠️ Its free for first 1000 enrollments only!


#LLM #python
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Want to be a backend architect ?

learn :

1. Microservices Design
Service decomposition, Bounded contexts, Resilience (Circuit Breaker, Bulkheads)

2. Distributed Systems Fundamentals
CAP Theorem, Event sourcing, CQRS, Data consistency models (ACID vs. BASE)

3. High-Performance Data Management
Database partitioning, Index optimization, NoSQL data modeling

4. Advanced API Design
gRPC, GraphQL, API Gateways, Asynchronous APIs

5. Event-Driven Architecture
Kafka, Message queues, Pub/Sub patterns, Saga pattern

6. Cloud-Native Patterns
Container orchestration (Kubernetes), Serverless, Multi-cloud strategies

7. Observability
Distributed tracing (OpenTelemetry), Centralized logging (ELK), Real-time monitoring

8. Infrastructure as Code
Terraform, Helm, Configuration management best practices

9. Advanced Security
Zero Trust, OAuth2, JWT, Data encryption in transit and at rest

10. Scaling Strategies
Load balancing, Sharding, Horizontal vs. vertical scaling

Node js free courses

Node JS Tutorial for Beginners
🎬 37 video lesson
Duration ⏰: 4-5 hours worth of material
🏃‍♂️ Self paced
Resource: Class Central
🔗 Course Link

Node JS API Development for Beginners
Rating ⭐️: 4.5 out of 5
Students 👨‍🎓: 82,105
Duration ⏰: 2hr 47min
Created by: Ryan Dhungel
🔗 Course Link

Beginner's Series to: Node.js
🎬 26 video lesson
🏃‍♂️ Self paced
Teacher: Yohan Lasora
Source: microsoft
🔗 Course Link

MongooseJS Essentials - Learn MongoDB for Node.js
Rating ⭐️: 5 out of 5
Students 👨‍🎓: 82,866
Duration ⏰: 43min of on-demand video
Created by: Patrick Schroeder
🔗 Course Link

Node js Tutorials
🎬 14 video lesson
🏃‍♂️ Self paced
Resource: Youtube
🔗 Course Link

The complete NestJS developer. Enterprise Node.js framework
Rating ⭐️: 4.1 out of 5
Students 👨‍🎓: 25,045
Duration ⏰: 3hr 43min of on-demand video
Created by: Dawid Dominiak
🔗 Course Link

Node.js and Express (No Video)
⏳Modules: 13
☢️ Exercises
🏃‍♂️ Self paced
Resource: fullstackopen
🔗 Course Link

Introduction to NodeJS (No Video)
⏳Modules: 4
☢️ Assignments
🏃‍♂️ Self paced
Resource: theodinproject
🔗 Course Link

Node.JS Tutorial (No Video)
⏳Modules: 10
🏃‍♂️ Self paced
Resource: tutlane
🔗 Course Link


Books
Mastering Node.js
Fullstack Node.js
Web Development with Node and Express


#Node #Node_js #Backend #Express
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AI chatbots are the new priests

AI Chatbots as Virtual Priests: Can They Truly Console?
AI chatbots like "Cathy," developed by TryTank Institute, are designed to offer faith-based guidance, drawing from Episcopal teachings to answer users’ spiritual questions. While Cathy provides practical advice on issues like anxiety and grief, it lacks the genuine empathy and presence a human priest would offer. Experts argue that while bots can provide 24/7 support and information, true spiritual comfort and connection require human interaction that AI cannot replicate. Cathy highlights the potential of faith-based AI but also its limitations in fulfilling deeper emotional needs.


Source-Link : MSN

PHP for Beginners - Learn the Essentials - PHP 8

Learn the basics and become a web development guru while saving time!

Rating ⭐️: 4.7 out 5
Students 👨‍🎓 : 1,129
Duration ⏰ : 1hr 8min of on-demand video
Created by 👨‍🏫 : Ku Programs

🔗 COURSE LINK


#php #testing #php_8
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12 Essential Math Theories for AI
Understanding AI requires a foundation in core mathematical concepts. Here are twelve key theories that deepen your AI knowledge:

Curse of Dimensionality:
Challenges with high-dimensional data.
Law of Large Numbers:
Reliability improves with larger datasets.
Central Limit Theorem:
Sample means approach a normal distribution.
Bayes' Theorem:
Updates probabilities with new data.
Overfitting & Underfitting:
Finding balance in model complexity.
Gradient Descent:
Optimizes model performance.
Information Theory:
Efficient data compression.
Markov Decision Processes:
Models for decision-making.
Game Theory:
Insights on agent interactions.
Statistical Learning Theory:
Basis for prediction models.
Hebbian Theory:
Neural networks learning principles.
Convolution:
Image processing in AI.

Familiarity with these theories will greatly enhance understanding of AI development and its underlying principles. Each concept builds a foundation for advanced topics and applications.