> ## Documentation Index
> Fetch the complete documentation index at: https://elementary-devin-1782754750-bigquery-permissions-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Schema Validation Tests

The Elementary dbt package includes the following schema validation tests:

<Card title="Schema changes" href="/data-tests/schema-tests/schema-changes">
  Fails on changes in schema: deleted or added columns, or change of data type
  of a column.
</Card>

<Card title="Schema changes from baseline" href="/data-tests/schema-tests/schema-changes-from-baseline">
  Fails if the table schema is different in columns names or column types than a
  configured baseline (can be generated with a macro).
</Card>

<Card title="JSON schema" href="/data-tests/schema-tests/json-schema">
  Monitors a JSON type column and fails if there are JSON events that don't
  match a configured JSON schema (can be generated with a macro).
</Card>

<Card title="Exposure schema" href="/data-tests/schema-tests/exposure-tests">
  Monitors changes in your models' columns that break schema for downstream
  exposures, such as BI dashboards.
</Card>