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      CoolaData™

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      Programmer Interview

      11 Mar 2015
      Anonymous interview candidate
      Tel Aviv-Yafo
      Declined offer
      Negative experience
      Difficult interview

      Application

      I applied through a recruiter. The process took 1 week. I interviewed at CoolaData™ (Tel Aviv-Yafo) in Sept 2014

      Interview

      I had one hour meeting with a team leader. We have a short conversation about company and my experience. After that he began to ask me professional questions As I had impression that I was excellent in this interview I was very puzzled by their negative answer.

      Interview questions [4]

      Question 1

      Please construct database tables for an inheritance case, propose all possible options. And after that I was asked to argument for all con and pro for every possible version.
      Answer question

      Question 2

      How to build Scalable Database?
      Answer question

      Question 3

      I was asked to demonstrate solution for finding top 5 best selling products in RDBMS using SQL language
      Answer question

      Question 4

      I was asked to demonstrate solution for finding top 5 best selling products in Big Data using map-reduce pattern
      Answer question

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