Master 25 Data Migration interview questions covering ETL processes, risk mitigation, and legacy system transitions.
Question 14 of 25
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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.
"With regard to data migration, a three-tiered system refers to the data warehouse. The middle tier serves as the interface to both the users on the front end and the data on the back end. It is what retrieves the data based on the user quarries and makes it available in a usable and secure format. The front end is the users, and the back-end is where the data is stored."

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 another question that will test your knowledge of data migration and data warehousing. You can assume the interviewer will have access to a wide range of technical and operational questions they can ask you. While there is no way you can study and be prepared for every single question, you should be able to handle most of them. If you're asked a question you can't answer, simply tell the interviewer that you don't have that information handy, and then describe how you would go about locating it.

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.
"The data warehouse is the 3-tier system in data migration. The first tier is the end-users or the front end. The middle tier in data migration provides end-users the data that they can use and which is secure. The final tier is the back end, where the data is stored."
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Written by William Swansen
25 Questions & Answers • Data Migration

By William

By William