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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...
Kumar Prafull - 0

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...
Kumar Prafull - 0

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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React Query: Caching, Background Sync, Pagination

Kumar Prafull -
In this module, we will explore React Query, a powerful data-fetching and state management library for React that simplifies handling asynchronous data. React Query...

Data Fetching with Fetch API and Axios

Kumar Prafull -
In this module, we will learn how to fetch data in a React application using both the Fetch API and Axios. Fetching data from...

Building a Todo App with Custom Hooks and State Management

Kumar Prafull -
In this module, we will build a Todo App using React and demonstrate the power of custom hooks and state management. The application will...

Optimizing React Performance and Avoiding Re-Renders

Kumar Prafull -
In this module, we will dive into key techniques for optimizing performance in React. We will explore how React's re-rendering mechanism works and what...

Memoization with React.memo, useMemo, useCallback

Kumar Prafull -
In this module, we will dive deep into memoization in React and understand how to optimize rendering and improve performance by using React.memo, useMemo,...

Managing Form State with React Hook Form and Formik

Kumar Prafull -
In this module, we will deep dive into two powerful libraries for managing form state in React: React Hook Form and Formik. We will...

Zustand vs Jotai vs Recoil: Lightweight Alternatives

Kumar Prafull -
In this module, we will dive into three popular state management libraries in the React ecosystem: Zustand, Jotai, and Recoil. These libraries are lightweight...

Advanced Redux Patterns: Middleware, DevTools, and Custom Logic

Kumar Prafull -
Redux Toolkit makes state management easy and straightforward, but as your application grows, you may encounter more complex use cases. In this module, we...

Redux Toolkit: Modern Redux Made Easy

Kumar Prafull -
Managing state across large React applications can be complex. Traditionally, Redux has been the go-to solution for state management in React, but its boilerplate-heavy...

React Context API: Avoiding Prop DrillingReact

Kumar Prafull -
In React, one of the common problems faced when managing state is prop drilling—passing data through multiple layers of components just to get it...

useReducer for Complex State in React

Kumar Prafull -
While useState is great for handling simple state updates, managing more complex state—especially when the state depends on multiple variables or needs specific actions—can...

Custom Hooks: Encapsulating Logic in React

Kumar Prafull -
Custom hooks are a powerful feature of React that allows you to encapsulate and reuse logic across multiple components. Whether you're managing form input,...
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