Real questions from top companies · medium
Describe your approach to managing data deduplication.
Discuss Primary, Foreign, and Composite Keys.
Discuss the average data volume handled and strategies used for efficient processing.
Explain how you would implement a caching mechanism for frequently accessed video metadata.
Extract insights from given JSON data using your preferred framework.
Fetch the rows with the highest scores for each student in a year.
Find All Numbers that Appear at Least Three Times Consecutively
Find the names of managers who have at least 7 employees directly reporting to them.
Find top 3 products sold based on total quantity.
Given exchange rates for USD to INR with timestamps: Find the ticket price in rupees for various dates. Use the latest exchange rate based on the timestamp for each date.
Given the data with id, name, and department, how would you calculate how many employees are in each department?
Graph Databases - explain
Handling node failures
How can technology improve private equity investments?
How does Z ORDERING enhance data retrieval performance?
How does cluster size impact parallelism limits?
How would you optimize a slow-running SQL query?
How would you implement custom alarms for data delays or job failures?
How would you monitor and reduce disk-based queries (disk spilling)?
Identify the top 5 customers with the highest purchases in the last quarter.
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