What types of tools are used for ETL?

Popular ETL tools include Apache Airflow, Talend, Informatica, AWS Glue, and Fivetran. Many modern tools now support both ETL and ELT workflows.

How often should ETL processes run?

It depends on the business need. Some ETL pipelines run daily or hourly, while real-time systems continuously stream and process data as it arrives.

What is the difference between ETL and data integration?

ETL is a specific method of data integration that follows a structured sequence. Data integration can include ETL but also covers other methods like streaming or API-based synchronization.

Can ETL handle unstructured data?

Yes, modern ETL systems can process both structured data (like tables) and unstructured data (like logs or text) by using specialized transformations.

Why is ETL critical for analytics?

Without ETL, data remains fragmented, inconsistent, and difficult to analyze. ETL prepares clean, centralized data that powers dashboards, reports, and machine learning models.

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