{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "required": ["basis-artifact-id", "basis-artifact-sha256", "conceptual", "logical", "physical", "ownership", "classification", "lineage", "retention", "compatibility", "data-quality-thresholds"],
  "properties": {
    "basis-artifact-id": {"type": "string", "minLength": 1},
    "basis-artifact-sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
    "conceptual": {"type": "object", "minProperties": 1},
    "logical": {"type": "object", "minProperties": 1},
    "physical": {"type": "object", "minProperties": 1},
    "ownership": {"type": "object", "minProperties": 1},
    "classification": {"type": "object", "required": ["pii", "sensitivity"], "properties": {"pii": {"type": "boolean"}, "sensitivity": {"enum": ["public", "internal", "confidential", "restricted"]}}},
    "lineage": {"type": "array", "minItems": 1},
    "retention": {"type": "object", "required": ["policy", "duration"]},
    "compatibility": {"type": "object", "required": ["schema-version", "evolution-policy"]},
    "data-quality-thresholds": {"type": "array", "minItems": 1}
  }
}