Data Integration and Governance
Jan 23, 2026 · Big Data
Essential Data Warehouse Terms Every Developer Should Master
This guide explains the core data‑warehouse terminology—from ODS, DWD, DWS, and ADS layers, through fact and dimension tables, SCD handling, partitioning and bucketing, to data quality dimensions, common data issues, ETL vs. ELT, data lake vs. warehouse, and OLTP/OLAP concepts—providing a complete reference for new data engineers.
ETL/ELTOLAPPartitioning
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