Data Migration Mock Interview
Master 25 Data Migration interview questions covering ETL processes, risk mitigation, and legacy system transitions.
Question 15 of 25
Can you tell me the names of the three layers in a data migration system?
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William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"Data migration systems have three distinct layers. The first of these is the source layer, which obtains the data from external sources. The middle layer is where the data is transformed and screened to ensure it is appropriate for the data warehouse. The final layer is the dimension or presentation layer. This is where users access the data for various purposes."
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
This is a follow-up question to the one the interviewer previously asked, and you responded to. Follow-up questions are common during an interview, especially when the interviewer has a particular interest in a topic or is looking to solicit more information from you based on the answer you already provided. You should be prepared for follow-up questions throughout the interview.
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"There are three layers and a data migration system. The first is the source layer which is the layer where the data first lands. The next layer is the integration layer, where the data is stored after it has been cleansed. The third and final layer is the dimension layer, where the presentation layer stands."
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