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Satyam Venture Engineering Services Interview Questions and Answers

Updated 19 Dec 2024

Q1. What is the method to obtain a running total per month for a given sales data set, and how can the three-month moving average of total sales be calculated?

Ans.

Running total per month can be obtained by summing the sales data for each month. Three-month moving average can be calculated by averaging the total sales for the current month and the two previous months.

  • To obtain a running total per month, sum the sales data for each month.

  • To calculate the three-month moving average of total sales, average the total sales for the current month and the two previous months.

  • Example: Running total for January = Sales in January, Three-month mo...read more

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Q2. What is the difference between relational and non-relational databases, and can you provide examples of each?

Ans.

Relational databases store data in tables with predefined relationships, while non-relational databases store data in flexible, schema-less formats.

  • Relational databases use structured query language (SQL) for querying data

  • Non-relational databases are more flexible and can store data in various formats like key-value pairs, documents, graphs, etc.

  • Examples of relational databases include MySQL, Oracle, and SQL Server

  • Examples of non-relational databases include MongoDB, Cassandr...read more

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Q3. Which is more efficient: Common Table Expressions (CTEs) or Subqueries?

Ans.

CTEs are generally more efficient than subqueries due to their ability to be reused and optimized by the query planner.

  • CTEs can be referenced multiple times within a query, reducing the need to repeat the same subquery logic.

  • CTEs can improve query readability and maintainability by breaking down complex logic into smaller, more manageable parts.

  • CTEs can be optimized by the query planner, potentially leading to better performance compared to subqueries.

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Q4. Current Location

Ans.

I am currently located in New York City.

  • I am based in New York City

  • I have been living in New York for the past 5 years

  • My current address is in Manhattan, New York

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Q5. Reverse a stack using recursion

Ans.

Reverse a stack using recursion

  • Use recursion to remove each element from the stack and store it in a temporary variable

  • Recursively call the reverse function on the remaining stack

  • Push the temporary variable back into the reversed stack

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Q6. Design a Invoice generation system

Ans.

Design a system for generating invoices.

  • Identify the necessary data for an invoice (e.g. customer information, item details, pricing)

  • Create a database schema to store invoice data

  • Develop a user interface for entering invoice information

  • Implement logic to calculate totals, taxes, and discounts

  • Generate a PDF or printable version of the invoice

  • Include functionality for tracking invoice status and payment

  • Consider security measures to protect sensitive data

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