Obbserv Online Services Interview Questions and Answers

Q1. Personal information
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Q2. Ask about my skills and projects
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Q1. Difference between union and union all in SQL?
Ans. 
Union combines and removes duplicates, Union All combines without removing duplicates.
• Union combines result sets and removes duplicates

• Union All combines result sets without removing duplicates

• Union is slower than Union All as it involves removing duplicates

• Example: SELECT column1 FROM table1 UNION SELECT column1 FROM table2;

• Example: SELECT column1 FROM table1 UNION ALL SELECT column1 FROM table2;
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Q2. How to show top 5 in pandas?
Ans. 
To show top 5 in pandas, use the nlargest() function.
• Use the nlargest() function with the 'n' parameter set to 5 to get the top 5 values in a pandas DataFrame.

• For example: df['column_name'].nlargest(5) will return the top 5 values in the specified column.
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Q1. If we have 3 numerical columns, which chart is a better representation these column?
Ans. 
A scatter plot is a better representation for 3 numerical columns.
• Use a scatter plot to show the relationship between the numerical columns.

• Scatter plots are effective for visualizing correlations and patterns in data.

• Each point on the plot represents a data point with values from all 3 columns.
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Q1. About datorama explain how it works
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Q2. More about digital marketing
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Basis Aptitude and E mail writing

Q1. Technical Interview 1 Based on your Job profile
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Q1. Technical Interview 2 based on job profile
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Q1. Technical Interview with GM , round 3
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Q1. Salary Discussion with Hr and other discussion
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Basic aptitude test with analytical questions and problem solving

Q1. Supply chain management related questions
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Q1. What are the requirements
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Q2. And about the salary structure
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Q1. 1. About Experience in Supply Chain. 2. Reason for Change 3. Are you an individual contributor? 4. Ok with 3-12 shift
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Q1. TL/ AM Round 1. About your Academics and previous experiences roles/ responsibilities. 2. About End-to-end SCM process starting from quotations to delivering product 3. Inco-Terms 4. Square inch to square ...read more
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Q1. GM 1. Normal Introduction 2. Dicussion on previous experience 3. Individual contributor 4. Reason for change 5 Will try to check confidence and understanding
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Q1. Introduce my self?
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