Le data engineer est un professionnel de l’informatique présent dans presque tous les secteurs. Il/Elle suit l’évolution et les tendances des données pour orienter les stratégies futures de l’entreprise. Une part essentielle de son travail consiste à transformer des données brutes en données exploitables en créant des pipelines et des systèmes de données.
You are designing a relational database to keep track of a library. Here is some of the information you might be interested in storing. • Names and addresses of patrons of the library • Titles at the library • Author information • Individual copies of titles at the library • Books that individuals have checked in and checked out of the library • Dates and times individuals have checked in and checked out books at the library
How would you describe bitcoin/crypto to your gran
Experience based questions based on your resume
How would you run multiple programs if threads are restricted by the python GIL
nothing difficult.
Can you describe a data pipeline you’ve built, the tools you used, and the business impact?
Write a function to parse a string make sure that it's a well formed JSON. Essentially matching the order of opening and closing enclosures (){}[]. Erroneous examples would have them out of order and opening without closing or closing without opening.
Correlated SQL queries, when would you use it and why? What executes first, inner or outer ?
2 python -> buy/sell I + needle/haystack 1 mysql -> nth highest salary without row_number/rank
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