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explain the process of designing the ETL.(extract transform load) Also explain the Designing of Staging areas...

explain the process of designing the ETL.(extract transform load)

Also explain the Designing of Staging areas and creating of mapping.

Also discuss in details Transformations in particular: STORE mapping, PRODUCT Mapping, and SALES cube mapping. and discuss the Features and Benefits of OWB.

Engineering   Computer-Science   
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Answer #1

ETL Process

ETL is the process by which data is extracted from data sources (that are not optimized for analytics), and moved to a central host (which is). The exact steps in that process might differ from one ETL tool to the next, but the end result is the same.

At its most basic, the ETL process encompasses data extraction, transformation, and loading. While the abbreviation implies a neat, three-step process – extract, transform, load – this simple definition doesn’t capture:

The transportation of data

The overlap between each of these stages

How new technologies are changing this flow

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