How would you design an ETL pipeline to handle real-time data ingestion from multiple sources (e.g., web servers, mobile apps) and ensure data quality and consistency before loading it into a data warehouse?
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Find the Hamming distance of these two lists
SQL Question asking for a percentage of the selected data.
Same as mentioned in other responses here.
What are the top five (ranked in decreasing order) single-channel media types that correspond to the most money the grocery chain had spent on its promotional campaigns? media_type can contain mutliple values seperated by a comma, so single channel is when media_type only has one value.
python:1. find 's' in mississippi 2. uncommon words 3. replace none with next element in the list. SQL: 2 questions on case, 1 on order-limit/rank/top(whatever you want to use),percentage/ratio calculations/joins
Glassdoor questions should be enough.
python data structures such as sets, dictionary, list, string, etc
How did you collect requirements for the new application?
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