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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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Conditional Statements in PHP (if, else, switch) – A Deep Dive

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Table of Contents Introduction to Conditional Logic Importance of Conditional Statements if Statement in PHP if...else Statement if...elseif...else Ladder Nested if Statements switch Statement in PHP match Expression (PHP 8+) Best Practices for...

Operators in PHP – A Complete Guide

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Table of Contents Introduction to PHP Operators Types of PHP Operators Arithmetic Operators Assignment Operators Comparison Operators Increment/Decrement Operators Logical Operators String Operators Array Operators Spaceship and Null Coalescing Operators (PHP 7+) Operator Precedence in...

Variables, Data Types, and Constants in PHP

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Table of Contents What are Variables in PHP? Rules for Naming PHP Variables Variable Declaration and Assignment PHP Data Types Explained String Integer Float (Double) Boolean Array Object NULL Resource Type Juggling and Type Casting in PHP What...

Basic PHP Syntax and Hello World

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Table of Contents Introduction to PHP Syntax PHP Tags and Code Structure PHP Statements and Semicolons Comments in PHP Output in PHP: echo vs print Hello World in PHP Best Practices...

Introduction to PHP and Setting Up the Environment

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Table of Contents What is PHP? Why Learn PHP? History and Popularity of PHP Common Use Cases of PHP Prerequisites for Learning PHP Setting Up Your PHP Development Environment Testing Your...

Building and Deploying with CI/CD to Cloud (Capstone Project)

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Table of Contents Overview of the Capstone Project Designing a Complete CI/CD Pipeline from Code Commit to Deployment Implementing Containerization, Infrastructure as Code (IaC), and Cloud Deployment Monitoring...

Continuous Testing in DevOps

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Table of Contents Importance of Continuous Testing in the DevOps Pipeline Integrating Automated Tests (Unit, Integration, End-to-End) into CI/CD Testing Strategies for DevOps Pipelines Conclusion Importance of Continuous Testing...

Microservices Architecture and DevOps

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Table of Contents Understanding Microservices Architecture What is Microservices Architecture? Key Benefits of Microservices Microservices vs. Monolithic Architecture DevOps Best Practices for Microservices CI/CD for Microservices Versioning and Rolling Updates Automation and...

Cloud-Native DevOps Practices

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Table of Contents Overview of Cloud-Native Technologies Microservices Architecture Containers and Container Orchestration Serverless Architectures Adopting DevOps Practices for Cloud-Native Applications Continuous Integration and Continuous Delivery (CI/CD) Infrastructure as Code (IaC) Monitoring...

Scaling and Auto-Scaling in Kubernetes

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Table of Contents Introduction to Scaling Applications in Kubernetes Why Scaling is Important in Kubernetes Types of Scaling in Kubernetes Horizontal Pod Autoscaling (HPA) What is Horizontal Pod Autoscaling? How...

Secrets Management and Vault

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Table of Contents Introduction to Secrets Management What is Secrets Management? Why Secrets Management is Crucial for Security Challenges of Managing Secrets in DevOps Using HashiCorp Vault to Manage...

Security in DevOps (DevSecOps)

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Table of Contents Introduction to DevSecOps Principles What is DevSecOps? The Shift-Left Approach to Security Implementing Security Checks in the CI/CD Pipeline Why Security Should Be Integrated into CI/CD Automating...
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