INTERVIEW QUESTIONS DATA WAREHOUSING INFORMATICA DETAILS

Question: What are the reusable transforamtions?

Answer: Reusable transformations can be used in multiple mappings.When you need to incorporate this transformation into maping,U add an instance of it to maping.Later if you change the definition of the transformation ,all instances of it inherit the changes.Since the instance of reusable transforamation is a pointer to that transforamtion,You can change the transforamation in the transformation developer,its instances automatically reflect these changes.This feature can save you great deal of work.

Reusable transformations can be used in multiple mappings.When you need to incorporate this transformation into maping,U add an instance of it to maping.Later if you change the definition of the transformation ,all instances of it inherit the changes.Since the instance of reusable transforamation is a pointer to that transforamtion,You can change the transforamation in the transformation developer,its instances automatically reflect these changes.This feature can save you great deal of work. Source: CoolInterview.com

A reusable Transformation is a reusable metadata object , defined with business logic using single Transformation. Source: CoolInterview.com

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