Any general guidelines to allocate table space quota to different layers in ETL?
I am looking for any general guidelines to allocate table space quota to different layers/schemas in ETL flow of a data warehouse (% of total space in each layer).
I have these 4 layers:
1. Staging -truncate and load data from source files
2. ODS- Type 1 persistent tables
3. Transformation layer- similar to final DWH layer but truncate before loading newly arrived data
4. DWH layer- Final dimensional model layer
I understand space requirement may vary based on project requirements, however still any general guideline (if any such in data warehousing and ETL space) to estimate the space will be helpful.
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