juniorData Processing
What is data aggregation?
Updated May 15, 2026
Short answer
Data aggregation summarizes multiple data points into a single value.
Deep explanation
It includes operations like sum, average, count, and grouping to derive insights from large datasets.
Real-world example
Calculating daily active users in apps.
Common mistakes
- Aggregating without grouping correctly.
Follow-up questions
- What SQL functions are used?
- Why is aggregation important?