What are ETL processes and how do they work?
ETL stands for Extract, Transform, Load. It's a data integration process that involves extracting data from various sources, transforming it into a suitable format, and loading it into a destination database or data warehouse.
Can you give me an example of an ETL process?
Sure! For instance, a retail company might extract sales data from their point-of-sale system, transform it by cleaning and aggregating the data, and then load it into a data warehouse for analysis.
What tools are commonly used for ETL?
Common ETL tools include Apache NiFi, Talend, Informatica, and Microsoft SQL Server Integration Services (SSIS).
What are the benefits of using ETL?
ETL helps in consolidating data from multiple sources, improving data quality, and enabling better data analysis and reporting.
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