What is the difference between a normal Delta table and a Delta Live Table?
💡 Model Answer
A normal Delta table is a storage format that adds ACID transactions, schema enforcement, and time travel on top of Parquet files. It is managed manually: you create, write, and query it using Spark or SQL, and you are responsible for partitioning, compaction, and monitoring. A Delta Live Table (DLT) is a managed service built on Delta Lake that automates the entire ETL workflow. With DLT you define a pipeline in a declarative way, specify source, transformations, and target tables, and the service handles scheduling, retries, lineage, and data quality checks. DLT also provides built‑in monitoring dashboards, automatic schema evolution, and the ability to run pipelines in a “dev” or “prod” mode. In short, a Delta table is just a storage layer; a Delta Live Table is a higher‑level orchestration layer that uses Delta tables under the hood.
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