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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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Password Hashing and Authentication

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Table of Contents Introduction to Password Hashing Why Hashing is Important Using PHP’s Built-in Hashing Functions Salting: Adding Extra Security Best Practices for Password Hashing Implementing Authentication with Password Hashing Two-Factor...

Advanced PHP Security Techniques

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Table of Contents Introduction to Advanced Security Techniques Advanced Encryption Methods Secure API Authentication and Authorization Rate Limiting to Prevent Abuse Security Headers and Their Role Secure File Handling and...

Security Best Practices in PHP

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Table of Contents Introduction to Security in PHP SQL Injection and How to Prevent It Cross-Site Scripting (XSS) and How to Prevent It Cross-Site Request Forgery (CSRF) and...

Consuming APIs in PHP

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Table of Contents Introduction to Consuming APIs Making HTTP Requests in PHP Using cURL to Make API Requests Handling JSON Responses Error Handling When Consuming APIs Authentication in API Requests Using...

RESTful APIs with PHP

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Table of Contents Introduction to RESTful APIs Basics of HTTP Methods: GET, POST, PUT, DELETE Setting Up the Project Creating Endpoints: Handling Requests and Responses Returning JSON Responses Using URL...

Using PHP Libraries with Composer

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Table of Contents Introduction to PHP Libraries and Composer Installing Libraries with Composer Installing Specific Libraries Installing a Specific Version of a Library Updating Libraries with Composer Removing Libraries with...

Introduction to Composer (Dependency Manager)

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Table of Contents What is Composer? The Role of Composer in PHP Development Why Use Composer? Installing Composer Basic Composer Commands Initializing a Project with Composer Installing Dependencies Updating Dependencies Removing Dependencies Managing Autoloading...

Creating a Simple MVC Framework

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Table of Contents Introduction to MVC What is MVC? The Benefits of MVC Architecture The Core Components of MVC Model View Controller Building a Simple MVC Framework Setting Up the Project Structure Implementing the...

PHP Design Patterns: Singleton, Factory, etc.

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Table of Contents Introduction to Design Patterns What are Design Patterns? Why Use Design Patterns? Common PHP Design Patterns Singleton Pattern Factory Pattern Strategy Pattern Observer Pattern Adapter Pattern Best Practices for Using Design...

String Manipulation in PHP – Functions and Techniques

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Table of Contents Introduction to String Manipulation in PHP Why String Manipulation is Important Common String Functions in PHP String Concatenation String Length and Trimming Searching and Replacing Substrings String Comparison String...

Error and Exception Handling in Depth

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Table of Contents Introduction to Error Handling What is Error Handling? Types of Errors in PHP PHP Error Reporting Levels Displaying Errors in Development vs Production Introduction to Exception Handling What...

Autoloading and Namespaces in PHP

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Table of Contents Introduction to Autoloading in PHP What is Autoloading? Benefits of Autoloading How Autoloading Works in PHP Implementing Autoloading in PHP Introduction to Namespaces What are Namespaces? Benefits of Using...
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