Zifo RnD Solutions Clinical Data Manager Interview Questions and Answers

Q1. Self Introduction
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Q2. Salary Expectation
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Q1. 14 questions in excel formulas
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Basic aptitude questions, statics, probability etc

Q1. Where do you live in the USA
Ans. 
I live in New York City, the bustling metropolis known for its iconic landmarks and diverse culture.
• I reside in the heart of Manhattan, surrounded by towering skyscrapers.

• New York City is home to famous attractions like Times Square, Central Park, and the Statue of Liberty.

• The city offers a vibrant arts and entertainment scene, with Broadway shows and world-class museums.

• I enjoy exploring the diverse neighborhoods and ...read more
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Q2. Where do you see yourself in 5 years
Ans. 
In 5 years, I see myself as a senior data analyst leading a team, utilizing advanced analytics to drive strategic decision-making.
• Leading a team of data analysts

• Utilizing advanced analytics techniques

• Driving strategic decision-making

• Continuously learning and staying updated with the latest trends in data analysis
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Q1. Difference between Primary Key and Unique Key ?
Ans. 
Primary key uniquely identifies each record in a table, while Unique key allows only unique values but can have null values.
• Primary key enforces uniqueness and not null constraint on a column

• Primary key can consist of multiple columns

• Unique key allows only unique values but can have null values

• Unique key can be applied to multiple columns as well
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Q1. SQL and excel questions intermediate
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Q1. Highlight the odd cells in excel
Ans. 
Use conditional formatting to highlight odd cells in Excel
• Select the range of cells you want to highlight

• Go to the 'Home' tab and click on 'Conditional Formatting'

• Choose 'New Rule' and select 'Use a formula to determine which cells to format'

• Enter the formula '=MOD(A1,2)=1' (assuming A1 is the top-left cell of your selected range)

• Choose the formatting style you want for the odd cells
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Q2. What are Joins in SQL, explain different joins and their outputs
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table

• FU...read more
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Q3. Query to give running sum of salary
Ans. 
Use window function to calculate running sum of salary in SQL
• Use window function like SUM() with OVER() clause

• Partition the data by employee ID if needed

• Order the data by date or any other relevant column
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Easy SQL questions related to sub query

SQL moderate questions related to joins and window functions

Q1. Asked about specific tools related to requirement
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