Question started with generating a basic query given the database, with join and filter based on criteria. Then interviewer asked to implement a function that would do excat same things on any programming language i am comfortable with proper assumtions on which structure you would use for tables and how would you extend to perform this query as well.

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SQL query was simple, then the interviewer went into a small design question where i was evaluated based on whether i am selecting correct model for database, expand based on situation etc. Little bit understanding of different DSA strucutures would be positive in this questions and answers

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