Data Scientist
Location:
Washington , District of Columbia
Posted:
October 22, 2017
Reference:
04510-0010047141

Here are my notes from the call: Should have 80% of technical skills below, doesn't need to be SME but needs to have solid exposure of the below skills, and formal education – either through school or certification: SQL (PL/SQL is a plus) Complex Queries Innter/Outer Joins Oracle Object Table Relations ERDs, Logical Data Models Foreign Keys Best Practices to set up database applications Most important skill is ability to communicate with internal customers and know how to ask the right questions to hep customers understand their needs in data intelligence/analytics/data forensics. Must be able to reverse engineer – make sense out of data Questions asked during interview: Tell me the difference between dimension vs transational model Why put in 3rd normal form Difference between logical vs physical model – be able to get exampes Explain requirements traceability matrix What is Crud Matrix Conversions and functions using SQL What is Data mark vs ODF Define how to reverse engineer database


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