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Data Warehousing Concepts in SQL: Understanding Star and Snowflake Schemas

Table of Contents Introduction What Is a Data Warehouse? OLTP vs OLAP: The Need for Warehousing Key Components of a Data Warehouse What Is Dimensional Modeling? Facts and Dimensions Explained The...
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SQL with APIs and JSON Fields in PostgreSQL: Working with Semi-Structured Data

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SQL for Data Engineering: ETL Concepts and Building Scalable Data Pipelines

Table of Contents Introduction What Is Data Engineering and Why SQL Matters Understanding ETL (Extract, Transform, Load) SQL’s Role in Each ETL Stage Data Sources: Raw Data Ingestion with...
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SQL for Data Analysis: Deep Dive into KPIs and Cohort Analysis

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Error Handling in SQL: Managing Exceptions and Ensuring Reliable Transactions

Table of Contents Introduction Why Error Handling Matters in SQL Types of Errors in SQL Syntax Errors vs Runtime Errors Understanding Transaction Errors Rollbacks for Safe Error Recovery Error Handling in...

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Stored Procedures and Functions in SQL: Encapsulating Logic for Reuse and Automation

Table of Contents Introduction What Are Stored Procedures and Functions? Benefits of Using Stored Routines Stored Procedures vs Functions: Key Differences Syntax for Creating Stored Procedures Executing a Stored Procedure Parameters...

Triggers in SQL: Automating Database Behavior

Table of Contents Introduction What Is a Trigger in SQL? Why Use Triggers? Types of Triggers Syntax of a Trigger BEFORE vs AFTER Triggers INSERT, UPDATE, and DELETE Triggers Trigger Events: Row-Level...

Using Constraints in SQL: NOT NULL, UNIQUE, CHECK, and DEFAULT

Table of Contents Introduction What Are Constraints in SQL? Why Use Constraints? NOT NULL Constraint UNIQUE Constraint CHECK Constraint DEFAULT Constraint Combining Multiple Constraints Adding Constraints to Existing Tables Dropping Constraints Naming Constraints for Clarity Column-Level...

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Code Splitting and Lazy Loading with React.lazy and Suspense

Kumar Prafull -
Table of Contents Introduction What is Code Splitting? Why Code Splitting Matters Understanding React.lazy How to Use React.lazy and Suspense Code Splitting with Dynamic Imports Using Lazy Loading with React Router Handling...

Monorepo with Turborepo or Nx – Managing Multiple React Apps

Kumar Prafull -
Table of Contents Introduction What is a Monorepo? Benefits of Using a Monorepo for React Projects Turborepo vs Nx: Feature Comparison Setting Up a Monorepo with Turborepo Setting Up a...

Building a Chat Interface with Polling or WebSockets

Kumar Prafull -
Table of Contents Introduction Real-Time Communication: Polling vs WebSockets Setting Up the React Project Creating the Chat UI Polling-Based Implementation WebSocket-Based Implementation Optimizing Chat State Management Handling Edge Cases Security Considerations Scalability and Production...

Using Portals for Modals and Tooltips in React

Kumar Prafull -
Table of Contents Introduction What are React Portals? Why Use Portals? Creating a Portal in React Building a Modal with Portals Tooltip Example Using Portals Accessibility Considerations Styling and Z-Index Handling Best Practices...

React Suspense for Data Fetching (Future Concepts and Practical Uses)

Kumar Prafull -
Table of Contents Introduction What is React Suspense? Why Suspense for Data Fetching? React’s Vision for Asynchronous UI Basic Suspense for Code Splitting vs Data Fetching The Role of React...

Code Splitting and Lazy Loading in React

Kumar Prafull -
Table of Contents Introduction What is Code Splitting? Why Code Splitting Matters React.lazy and Suspense Basic Example of Lazy Loading a Component Suspense Fallback UI Lazy Loading Routes with React Router Dynamic...

Forward Refs and useRef for DOM Access in React

Kumar Prafull -
Table of Contents Introduction Understanding the useRef Hook Common useRef Use Cases Accessing DOM Elements with useRef What is forwardRef in React? When to Use forwardRef How to Use forwardRef in...

Error Boundaries – Handling Component Crashes Gracefully in React

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Table of Contents Introduction What are Error Boundaries in React? Why Do We Need Error Boundaries? When Do Error Boundaries Catch Errors? Limitations: What Error Boundaries Cannot Catch How to...

Debouncing and Throttling in React

Kumar Prafull -
Table of Contents Introduction What is Debouncing? What is Throttling? Comparing Debouncing vs Throttling Debouncing in React: Real Use Cases and Implementations 5.1 Debouncing with Lodash 5.2 Custom Debounce Hook Throttling in...

Role-Based Access Control and User Permissions

Kumar Prafull -
In this module, we will explore Role-Based Access Control (RBAC) and User Permissions in the context of React applications. These concepts are crucial for...

JWT Authentication in React: Login, Logout, Protected Routes

Kumar Prafull -
In this module, we will cover how to implement JWT (JSON Web Token) authentication in a React application. We will go through the process...

Loading, Error, and Empty States in UI

Kumar Prafull -
In this module, we will discuss how to handle common scenarios when building user interfaces with React: loading states, error states, and empty states....
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