DWH BI ETL Testing
DWH BI ETL Testing refers to the testing processes involved in ensuring the accuracy, integrity, and performance of Data Warehouse (DWH), Business Intelligence (BI), and Extract, Transform, Load (ETL) workflows. Here's a breakdown of the terms:
Data Warehouse (DWH)
A Data Warehouse is a central repository of structured data collected from multiple sources. It is optimized for querying and analysis rather than transaction processing.
- Validating schema design and data models.
- Verifying the correctness of aggregated and historical data.
- Ensuring data consistency between the source and warehouse.
Business Intelligence (BI)
BI refers to the tools and techniques used to analyze data stored in a data warehouse and generate actionable insights through dashboards, reports, and visualizations.
- Validating report accuracy against the data warehouse.
- Ensuring that dashboards are user-friendly and display the correct metrics.
- Testing the performance and responsiveness of BI tools.
Extract, Transform, Load (ETL)
ETL processes are the backbone of DWH and BI systems, responsible for:
- Extracting data from source systems.
- Transforming it into a usable format.
- Loading it into the data warehouse.
