What is Operational Data Store? - ETL

What is Operational Data Store?

- Operational Data Store is a repository between staging area and data warehouse

- Data in ODS is at the level of low granularity

- Aggregated data would be loaded into EDW, once the data in ODS populated.

- ODS is a semi DWH that helps the analysts to analyze business data

- Data will be persisted in ODS for less duration, generally from 30-45 days.

- ODS also generates primary keys, handles errors and rejects similar to DWH
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