Smart Energy Water Interview Questions and Answers

Case study to evaluate your skills

Q1. Technical check
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Q1. Salary negotiation
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Q1. Build a recommendation engine for Food Ordering App
Ans. 
Build a recommendation engine for Food Ordering App
• Collect user preferences and behavior data

• Use collaborative filtering to recommend similar items

• Implement machine learning algorithms to personalize recommendations

• Consider factors like location, cuisine, price range, and ratings

• Test and iterate to improve recommendation accuracy
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Q2. How will you integrate the online merchant
Ans. 
Integrating the online merchant involves collaborating with the merchant's technical team to set up API connections and ensure seamless transactions.
• Collaborate with the online merchant's technical team to set up API connections

• Ensure seamless transactions by testing the integration thoroughly

• Provide support and training to the merchant's team on how to use the integrated system
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Create user stories out of a use-case and design workflow for it.

Q1. Explanation around SQL Indexes
Ans. 
SQL Indexes improve query performance by allowing faster data retrieval
• Indexes are data structures that improve the speed of data retrieval operations on a database table

• They work by creating a sorted list of specific columns in a table, allowing the database to quickly locate the rows that match a query

• Types of indexes include clustered indexes (physically reorders the table) and non-clustered indexes (separate data s...read more
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Q2. Write order of SQL Queries
Ans. 
The order of SQL queries is crucial for proper execution and data retrieval.
• Start with SELECT statement to retrieve data from database

• Follow with FROM clause to specify the table(s) to query

• Add WHERE clause to filter the results based on specified conditions

• Include ORDER BY clause to sort the results in a specific order

• Finish with any additional clauses like GROUP BY or JOIN if needed
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Q3. What are windows functions and its implementations.
Ans. 
Windows functions are built-in functions provided by the Windows operating system to perform various tasks.
• Windows functions are used to interact with the operating system, such as creating windows, handling messages, and managing resources.

• Examples of Windows functions include CreateWindow, SendMessage, and LoadLibrary.

• Windows functions are typically called through the Windows API (Application Programming Interface).
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