Data ValidationAlso called: "json validation", "schema validation"
JSON Schema provides a contract for JSON data, enabling validation and documentation.
Core capabilities
- Define required and optional fields.
- Specify data types (string, number, boolean, array, object).
- Set value constraints (min/max, patterns, enums).
- Nest schemas for complex structures.
- Reference and reuse schema definitions.
Example schema
{
"type": "object",
"properties": {
"name": {"type": "string"},
"age": {"type": "integer", "minimum": 0}
},
"required": ["name"]
}
Use cases
- API request/response validation.
- Configuration file validation.
- Form generation and validation.
- Documentation generation.
- Code generation from schemas.
Benefits
- Catch data errors early.
- Self-documenting data structures.
- Consistent validation across systems.
- IDE autocomplete and hints.