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Data Engineering Interview Questions
20,957 data engineering interview questions shared by candidates
SQL Python / Java (one essential)
I was asked about slow-changing dimensions in Data Warehousing.
Some of the questions; your highest level of education, your work history, current work title and duties, what projects are you most proud of, are you pursuing educational goals, etc.
What do you do to stay up to date with the industry?
Numbers represent elevation. Find how much snow can be trapped in the sequence of numbers as input.
(This is what I stumbled on during the interview) Given an array of integers denoting the number of vehicles between each mile marker (value at index 0 is the number of vehicles between mile marker 0 to 10), how can you determine the number of vehicles in a given range? Follow up: if you were to perform m calls to this function, how could you optimize it such that you can speed up the retrieval for ranges that are commonly requested?
Manager round: What do you like to work on? Wait for the follow up. So does that means you don't like to work on stuff that we are already working on?
Use SQL window functions to summarize user transactions
diferencia entre dataframe,dataset y RDD
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