Quick definition · 2 min Coding term
Schema
A schema is the blueprint that defines what information your app stores and how it is organized into tables and fields.
Think of it like
The labeled dividers in a filing cabinet, deciding what goes where before any files are added.
Example
AI tools generate and “migrate” schemas. Changing one carelessly can wipe or scramble your saved data, so go gently.
Why it matters
Beginners do not realize a database has a fixed shape, or that changing it can break information they have already saved.
Where you’ll see it
PostgreSQLPrismaSupabase