Delta table

Concept

A Delta table is a table stored in the open Delta Lake format, Parquet files plus a transaction log, which is the default table format for lakehouses in Microsoft Fabric.

Title graphic: Delta table (Concept)

Type	Concept
Documentation	learn.microsoft.com/en-us/fabric/data-engineering/lakehouse-and-delta-tables

Glossary

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Sources

Documentation: learn.microsoft.com/en-us/fabric/data-engineering/lakehouse-and-delta-tables

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03