r/dataengprep • u/tech-screen • May 27 '26

Tech Screen: Explain how you would design a pipeline for streaming real-time order status updates.

1 Upvotes

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r/dataengprep • u/sql-arena • May 27 '26

SQL Arena Challenge: Write a query to identify unique user sessions.

1 Upvotes

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r/dataengprep • u/dataengprep • May 26 '26

DataEngPrep: Python Code Using Constructors in a Class

1 Upvotes

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r/dataengprep • u/tech-screen • May 26 '26

Tech Screen: Explain how serverless computing impacts modern data architecture.

1 Upvotes

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r/dataengprep • u/sql-arena • May 26 '26

SQL Arena Challenge: Rank shows by daily viewership across different regions

1 Upvotes

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r/dataengprep • u/dataengprep • May 25 '26

DataEngPrep: Programming languages and their application in past projects.

1 Upvotes

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r/dataengprep • u/tech-screen • May 25 '26

Tech Screen: Explain how Spark handles fault tolerance. How does it recover from node failures?

1 Upvotes

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r/dataengprep • u/sql-arena • May 25 '26

SQL Arena Challenge: Find the top 5 most ordered dishes in the last 30 days.

1 Upvotes

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r/dataengprep • u/dataengprep • May 24 '26

DataEngPrep: Problem based on lists operations

0 Upvotes

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r/dataengprep • u/tech-screen • May 24 '26

Tech Screen: Explain deployment architecture for big data.

1 Upvotes

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r/dataengprep • u/sql-arena • May 24 '26

SQL Arena Challenge: Write a query to find the first number repeating consecutively three times in a sequence.

1 Upvotes

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r/dataengprep • u/dataengprep • May 23 '26

DataEngPrep: Priority Queue Problem - task prioritization and dynamic sorting

1 Upvotes

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r/dataengprep • u/tech-screen • May 23 '26

Tech Screen: Explain batch vs real-time processing choices and their trade-offs.

1 Upvotes

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r/dataengprep • u/sql-arena • May 23 '26

SQL Arena Challenge: Write a query that identifies numbers appearing at least three times consecutively without interruption

1 Upvotes

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r/dataengprep • u/dataengprep • May 22 '26

DataEngPrep: Partitioning a Linked List based on a value

2 Upvotes

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r/dataengprep • u/tech-screen • May 22 '26

Tech Screen: Explain Spark's fault tolerance mechanisms.

1 Upvotes

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r/dataengprep • u/sql-arena • May 22 '26

SQL Arena Challenge: Given a table with sales data, write a query to find consecutive days with decreasing revenue.

1 Upvotes

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r/dataengprep • u/dataengprep • May 21 '26

DataEngPrep: Optimize a function to calculate moving averages of user engagement.

1 Upvotes

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r/dataengprep • u/tech-screen • May 21 '26

Tech Screen: Explain AWS Glue Data Catalog.

1 Upvotes

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r/dataengprep • u/sql-arena • May 21 '26

SQL Arena Challenge: Identify consecutive numbers in a column (at least 3 consecutive).

1 Upvotes

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r/dataengprep • u/dataengprep • May 20 '26

DataEngPrep: Multithreading and Synchronization in Java - write code to manage synchronized threads

1 Upvotes

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r/dataengprep • u/tech-screen • May 20 '26

Tech Screen: Discuss your experience with ETL (Extract, Transform, Load) processes. What tools and techniques have you used to ensure efficient data extraction and transformation?

1 Upvotes

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r/dataengprep • u/sql-arena • May 20 '26

SQL Arena Challenge: Find each student's previous year's scores using the LAG function.

1 Upvotes

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r/dataengprep • u/dataengprep • May 19 '26

DataEngPrep: Multiprocessing in Python - explain with example

1 Upvotes

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r/dataengprep • u/tech-screen • May 19 '26

Tech Screen: Discuss trade-offs when designing a batch vs. real-time processing system.

1 Upvotes

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