ETL testing courses can help you learn data extraction techniques, transformation processes, and loading verification methods. You can build skills in validating data integrity, creating test cases, and automating testing workflows. Many courses introduce tools like Apache Nifi, Talend, and Informatica, that support implementing ETL processes and ensuring data quality in various applications.

Duke University
Skills you'll gain: Blockchain, Loans, FinTech, Lending and Underwriting, Payment Systems, Cyber Risk, Operational Risk, General Lending, Scalability, Regulatory Compliance, Interoperability, Risk Management, Financial Inclusion, Financial Regulation, Legal Risk, Derivatives, Key Management, Finance, Entrepreneurial Finance, Entrepreneurship
★ 4.8 (2.2K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Threat Detection, Security Engineering, Endpoint Detection and Response, Security Information and Event Management (SIEM), Cyber Threat Hunting, AI Security, IT Security Architecture, Continuous Monitoring, MITRE ATT&CK Framework, Security Controls, Enterprise Architecture, Endpoint Security, Computer Security Incident Management, Data Loss Prevention, Incident Response, Data Security, Security Management, Cloud Security, Incident Management, Encryption
Advanced · Course · 1 - 3 Months

Skills you'll gain: Mobile Development, Mobile Development Tools, iOS Development, Other Mobile Programming Languages, Flutter (Software), Integrated Development Environments, Development Environment, Apple iOS, Android Studio, Computer Programming Tools, Application Development, Swift Programming, Test Tools, React Native, Apple Xcode, Application Frameworks, Web Applications, Cross Platform Development, Software Testing, Cloud Hosting
★ 4.7 (232) · Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Data Lakes, Data Analysis Expressions (DAX), Data Warehousing, Data Pipelines, Data Architecture, Microsoft Azure, Azure DevOps, Star Schema, Dataflow, Interviewing Skills, Extract, Transform, Load, Azure DevOps Pipelines, Professional Development, Dependency Analysis, Power BI, Transaction Processing, Microsoft Power Platform, Transact-SQL, PySpark, Web Presence
Advanced · Professional Certificate · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Reinforcement Learning, Deep Learning, Machine Learning Methods, Artificial Intelligence and Machine Learning (AI/ML), Computational Logic, Model Evaluation, Markov Model, Responsible AI, Machine Learning Algorithms, Decision Intelligence, AI Workflows, Model Optimization, Artificial Intelligence, Agentic systems, Machine Learning, Algorithms, Artificial Neural Networks, Statistical Machine Learning, Theoretical Computer Science, Applied Mathematics
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Eclipse (Software), Software Testing, Scripting, Test Tools, UI Components, Integrated Development Environments, Web Applications, Java, Functional Testing
★ 4.5 (362) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Application Security, Security Testing, DevSecOps, Threat Modeling, Vulnerability Scanning, Continuous Monitoring, Vulnerability Assessments, Application Performance Management, System Monitoring, Vulnerability Management, Development Environment, Security Controls, DevOps, Data Security, Software Development Life Cycle
★ 4.7 (255) · Intermediate · Course · 1 - 4 Weeks

The University of Hong Kong
Skills you'll gain: Medical Imaging, Dental Radiography, Dentistry, Dental Procedures, Laboratory Testing, X-Ray Computed Tomography, Materials science, Oral and Dental Care, Biomedical Engineering, Oral Health, Analytical Testing, 3D Modeling, Chemistry, Analytical Chemistry
★ 4.7 (529) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Data Analysis Expressions (DAX), Key Performance Indicators (KPIs), Power BI, Earned Value Management, Business Metrics, Project Performance, Performance Measurement, Customer Analysis, Marketing Analytics, Performance Metric, Project Controls, Performance Analysis, Customer Insights, Business Intelligence, Customer Retention, Operational Efficiency, Project Accounting, Data Analysis, Business Analysis, Business Operations
Beginner · Course · 1 - 3 Months

Multiple educators
Skills you'll gain: Data Store, Apache Airflow, Data Modeling, Data Pipelines, Data Storage, Data Storage Technologies, Data Architecture, Requirements Analysis, Data Processing, Data Warehousing, Query Languages, Data Preprocessing, Apache Hadoop, Requirements Elicitation, Vector Databases, Extract, Transform, Load, Data Lakes, Data Integration, Infrastructure as Code (IaC), Data Management
★ 4.7 (621) · Intermediate · Professional Certificate · 3 - 6 Months

Duke University
Skills you'll gain: Pandas (Python Package), MLOps (Machine Learning Operations), NumPy, Unit Testing, Model Deployment, Data Manipulation, Test Script Development, Software Testing, Data Import/Export, Applied Machine Learning, Test Automation, Data Wrangling, Python Programming, Code Reusability, Data Processing, Debugging, Data Structures, Machine Learning, Object Oriented Programming (OOP), Scripting
★ 4.2 (375) · Intermediate · Course · 1 - 3 Months

Universidad Nacional Autónoma de México
Skills you'll gain: NoSQL, Data Warehousing, Database Systems, Database Theory, Relational Databases, Database Management, Extract, Transform, Load, SQL, Databases, Data Mining, Database Development, Business Intelligence, Database Application, Database Management Systems, Big Data, Information Systems, Database Design, MongoDB, Scalability, Database Software
★ 4.3 (702) · Intermediate · Specialization · 3 - 6 Months