ETL Testing

ETL (Extract, Transform, Load) testing is a crucial process in data management that involves verifying the integrity and performance of data as it moves from various sources to a data warehouse. It ensures that data is accurately extracted from source systems, transformed according to business rules, and loaded into the target system without any loss or corruption. ETL testing involves validating data completeness, accuracy, transformation logic, and performance efficiency. It helps in identifying and resolving issues such as data inconsistencies, duplicate records, and data truncation, ensuring the reliability and accuracy of business intelligence reports and analytics.