Technical Skills:SQL:Strong SQL skills are essential for querying and manipulating data in relational databases, which are central to the ETL process. This includes understanding joins, aggregations, subqueries, and data manipulation techniques. ETL Tools:Familiarity with ETL tools like Informatica, Talend, IBM DataStage, or Microsoft SSIS is important for understanding how data is extracted, transformed, and loaded. Data Warehousing:A solid understanding of data warehousing concepts, includin