Introduction to ETL Pipelines
Chapter 1: Understanding ETL Fundamentals
What is Data Integration?
Introducing ETL: Extract, Transform, Load
The Purpose of ETL Processes
Distinguishing ETL from ELT
Common Data Sources and Targets
Identifying ETL Requirements
Quiz for Chapter 1
Chapter 2: The Extraction Stage
Connecting to Data Sources
Full Extraction vs. Incremental Extraction
Working with Structured Data (e.g., Databases, CSV)
Introduction to Semi-Structured Data (e.g., JSON, XML)
Change Data Capture (CDC) Concepts
Handling Extraction Errors
Practice: Simulating Data Extraction
Quiz for Chapter 2
Chapter 3: The Transformation Stage
Why Data Transformation is Necessary
Data Cleaning: Handling Missing Values
Data Cleaning: Correcting Errors
Data Validation Rules
Data Formatting and Standardization
Data Enrichment: Adding Information
Data Structuring: Joining and Splitting Data
Introduction to Data Aggregation
Practice: Applying Simple Transformations
Quiz for Chapter 3
Chapter 4: The Loading Stage
Choosing a Target System
Loading Strategies: Full Load
Loading Strategies: Incremental Load (Append/Update)
Understanding Target Schemas
Schema Mapping: Source to Target
Handling Loading Failures
Data Validation Post-Load
Practice: Data Loading
Quiz for Chapter 4
Chapter 5: Building Simple ETL Pipelines
What is an ETL Pipeline?
Pipeline Workflow and Dependencies
Introduction to ETL Tools Categories
Visual ETL Tools Overview
Scripting for ETL Overview
Scheduling and Automation Basics
Monitoring and Logging Fundamentals
Hands-on Practical: Designing a Simple Pipeline
Quiz for Chapter 5
Loading Strategies: Incremental Load (Append/Update)
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- The Data Warehouse Toolkit: The Definitive Guide to Dimensional Modeling, Ralph Kimball, Margy Ross, 2013 (John Wiley & Sons, Inc.) - Covers foundational ETL concepts, dimensional modeling, and loading strategies relevant to incremental updates and inserts.
- Fundamentals of Data Engineering: Plan and Build Robust Data Systems, Joe Reis, Matt Housley, 2022 (O'Reilly Media) - Discusses various data loading patterns and strategies, including incremental approaches, within the context of modern data engineering pipelines.
- Debezium Documentation: Change Data Capture for various databases, Debezium Community, 2024 - Provides detailed information on Change Data Capture (CDC) mechanisms, a technique for identifying changes in source systems for incremental loading.
- PostgreSQL Documentation: INSERT (ON CONFLICT DO UPDATE/NOTHING), The PostgreSQL Global Development Group, 2024 - Explains the
INSERT ... ON CONFLICTstatement, a direct SQL implementation of the upsert operation for incremental updates in many relational databases.