ML, coding, sql, and time series analysis
Programador De Bases De Datos Interview Questions
254 programador de bases de datos interview questions shared by candidates
They asked me questions around some of my data analyses and programming samples, some behavioral questions, and some common sense Statistics concepts.
Not applicable to my experience
1. Debugging python code (Flask)
Find all words you can make with a phone number. Then do it for an arbitrarily long string. All you had for determining what were words was an object with a method contains(string)
General BI development scenarios
How did you account for <issues that are commonly known about problem domain>? Do you know if there are any disadvantages to using this method/algorithm/model? Can you explain in detail how <algorithm referenced in presentation code but called from ext library> works? How would you work on this code collaboratively? Are there any improvements you would make to the code before production? How would you make this script machine readable? What was your experience like working with <programming language> on <project in CV>?
asked all spark related questions
1) Tell me about yourself. 2) Questions on projects mentioned in resume. 3) Rate yourself on R and SQL. 4) What are your strengths? 5) How do you print your name in reverse order without any custom function? A: Read the string character by character and print it using a loop by decreasing the index. 6) How do you create a bar and line chart using three data columns x,y, color,z . visualization write using ggplot. a: ggplot(data=data,aes(x=x,y=y))+geom_point()+ggtitle(color) ggplot(data=data, aes( x=x,y=z))+geom_bar() 7) Pick a number between 0 to 100. If you pick the number 10,000 times and plot the result. how would the distribution look like? and what is the mean A: Normal distribution. Mean is 50 8) what is the factor that controls the width of normal distribution? a: variance
How would you query data in SQL?
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