juniorData Processing
What is schema in data processing?
Updated May 15, 2026
Short answer
A schema defines the structure of data in a dataset.
Deep explanation
It specifies fields, types, and relationships, ensuring consistency across data systems.
Real-world example
Defining table structure in SQL databases.
Common mistakes
- Ignoring schema evolution in big systems.
Follow-up questions
- What is schema-on-read?
- What is schema-on-write?