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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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Operators in Java (Arithmetic, Relational, Logical)

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Table of Contents Introduction to Operators in Java Arithmetic Operators Relational (Comparison) Operators Logical Operators Assignment Operators Unary Operators Bitwise Operators (Bonus Section) Operator Precedence and Associativity Common Mistakes to Avoid Real-World Use Cases...

Writing Your First Java Program – Structure, Syntax, and Basics

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Table of Contents Java Program Structure Overview Creating a Simple Java Program Anatomy of a Java Program Understanding the main Method Packages and Class Names Java Comments (Single-line & Multi-line) Compiling...

Introduction to Java, Features & Setup (JDK, JRE, JVM)

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Table of Contents What is Java? A Brief History of Java Key Features of Java Java Terminologies: JDK, JRE, and JVM Java Compilation & Execution Process Installing Java (JDK) on...

Deploying PHP Applications

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Table of Contents Introduction to Deployment Preparing Your PHP Application for Deployment Choosing a Hosting Provider Setting Up a Web Server for PHP Deploying on Shared Hosting vs. VPS Deploying...

Creating an Admin Dashboard in PHP

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Table of Contents Introduction to Admin Dashboards Key Features of an Admin Dashboard Setting Up the Admin Panel Database Structure Building the Admin Dashboard Layout Implementing Authentication for Admin...

Building a Basic E-commerce Cart in PHP

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Table of Contents Introduction to Building an E-commerce Cart Key Features of the E-commerce Cart Setting Up the Database for E-commerce Creating the Cart Model and Database Operations Building...

Building a Simple Blog System in PHP

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Table of Contents Introduction to Building a Blog System Key Features of a Blog System Setting Up the Database for the Blog System Creating the Blog Model and...

Internationalization and Localization in PHP

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Table of Contents Introduction to Internationalization and Localization What is Internationalization (i18n)? What is Localization (l10n)? PHP and Localization Support Working with Translations in PHP Using gettext for Localization Handling Date,...

Sending Emails with PHP (PHPMailer)

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Table of Contents Introduction to Email Sending in PHP Why Use PHPMailer? Setting Up PHPMailer Sending Basic Emails with PHPMailer Sending HTML Emails with PHPMailer Sending Emails with Attachments Handling Errors...

Introduction to PHP and JavaScript Integration

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Table of Contents Introduction to PHP and JavaScript Integration How PHP and JavaScript Work Together Benefits of PHP and JavaScript Integration Common Use Cases for PHP and JavaScript...

PHP with AJAX

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Table of Contents Introduction to AJAX Understanding the Role of PHP in AJAX How AJAX Works Implementing AJAX with PHP: A Step-by-Step Guide Best Practices for Using AJAX with...

CSRF and XSS Protection Techniques

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Table of Contents Introduction to Web Security Vulnerabilities What is CSRF (Cross-Site Request Forgery)? How CSRF Works Techniques to Prevent CSRF What is XSS (Cross-Site Scripting)? How XSS Works Techniques to...
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