given some sample web UI log data, write a python algorithm to answer various questions
Data Engineer Interview Questions
Data Engineer Interview Questions
I Data engineer sono professionisti informatici richiesti pressoché in tutti i settori. Si occupano di monitorare i trend dei dati per pianificare le azioni più adeguate che un'azienda deve intraprendere. Uno degli aspetti più critici del lavoro di un Data engineer è l'elaborazione dei dati grezzi e la loro trasformazione in dati utilizzabili per creare pipeline e sistemi di dati.
Domande tipiche dei colloqui per Data engineer e come rispondere
Domanda 1: Puoi descrivere in dettaglio il tuo livello di competenza nell'ambito dei linguaggi di programmazione?
Domanda 2: Spiega a parole tue che cos’è il data engineering.
Domanda 3: Puoi descrivere un'esperienza lavorativa con Apache Hadoop e in ambienti di gestione dei dati nel cloud?
20,206 data engineer interview questions shared by candidates
Don't focus only on Leetcode SQL questions. Their questions are more higher level. Prepare for advanced ETL questions. You should write the best solution immediately instead of just writing the solution down.
Show gender, min birthday and max birthdate where a customer bought at least one product
Dot Product with Sparse Vectors, Dot product of sparse vectors stored as hashmaps
How would you design and build a data model to report on active users and number of posts by interface (ipad, iphone, desktop web, etc) given a hierarchy of these interfaces and their rollup groupings, at any and all levels of the hierarchy?
Phone: SQL qs are pretty basic on equi joins, outer joins, and self joins. Coding exercises are pretty basic like word search, etc. Time is a crunch (1hr). You have to keep explaining while coding so that the interviewer online understands your thought process. In Person: Some live coding exercise, tougher than phone qs, product sense, visualization.
Design a relational database for a ride-sharing app.
(After being shown a graph with some data) Can you think of reasons why the data would appear this way?
Easy/medium SQL and coding
Add up a sum of numbers on a whiteboard and give me the average.
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