There are three main approaches:
1.ETL Approach: (1) Extract from the source systems, (2) Transform inside the Informatica engine on integration engine servers, and (3) Load into target tables in the data warehouse.
2.ELT Approach: (1) Extract from the source systems, (2) Load into staging tables inside the data warehouse RDBMS servers, and (3) Transform inside the RDBMS engine using generated SQL with a final insert into the target tables in the data warehouse.
3.Hybrid ETLT Approach: (1) Extract from the source systems, (2) Transform inside the Informatica engine on integration engine servers, (3) Load into staging tables in the data warehouse, and (4) apply further Transformations inside the RDBMS engine using generated SQL with a final insert into the target tables in the data warehouse.
1 comment:
I look forward to more articles from you on Data Integration and ETL. I have been working on a similar project and your website has been of great help. Why have you stopped adding more articles on the website when you are doing a great job for the data community?
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