!!! tip
    SQLAlchemy uses the term "**model**" to refer to these classes and instances that interact with the database.

    But Pydantic also uses the term "**model**" to refer to something different, the data validation, conversion, and documentation classes and instances.

Import `Base` from `database` (the file `database.py` from above).

Create classes that inherit from it.

These classes are the SQLAlchemy models.

Service Level Indicators (SLIs) and Service Level Objectives (SLOs) for the system.
Here's the release [scalability validation report].

[SIG Scalability]: https://github.com/kubernetes/community/tree/master/sig-scalability
[scalability validation report]: https://github.com/kubernetes/sig-release/blob/master/releases/release-1.8/scalability_validation_report.md

### SIG Scheduling

  // If the signer cannot issue the certificate, a condition of type "Failed" is added and this field remains empty.
  //
  // Validation requirements:
  //  1. certificate must contain one or more PEM blocks.
  //  2. All PEM blocks must have the "CERTIFICATE" label, contain no headers, and the encoded data

[ComponentMaps](https://github.com/istio/operator/blob/e9097258cb4fbe59648e7da663cdad6f16927b8f/pkg/translate/translate.go#L83)
struct.

### Validations

Both the `IstioOperatorSpec` and Helm APIs are validated. The `IstioOperatorSpec` API is validated through a
table of validation rules in
[pkg/validate/validate.go](pkg/validate/validate.go). These rules

- github.com/getkin/kin-openapi: [v0.76.0](https://github.com/getkin/kin-openapi/tree/v0.76.0)
- github.com/go-ozzo/ozzo-validation: [v3.5.0+incompatible](https://github.com/go-ozzo/ozzo-validation/tree/v3.5.0)
- github.com/golang/freetype: [e2365df](https://github.com/golang/freetype/tree/e2365df)

  
  If `username.expression` used 'claims.email', then 'claims.email_verified' must have been used in `username.expression` or `extra[*].valueExpression` or `claimValidationRules[*].expression`. An example claim validation rule expression that matches the validation automatically applied when `username.claim` is set to 'email' is 'claims.?email_verified.orValue(true)'.
   ([#123737](https://github.com/kubernetes/kubernetes/pull/123737), [@enj](https://github.com/enj))

!!! info "정보"
    이 예전 OpenAPI-특화 `examples` 매개변수는 이제 FastAPI `0.103.0`부터 `openapi_examples`입니다.

### JSON 스키마의 `examples` 필드

하지만, 후에 JSON 스키마는 <a href="https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.9.5" class="external-link" target="_blank">`examples`</a>필드를 명세서의 새 버전에 추가했습니다.

그리고 새로운 OpenAPI 3.1.0은 이 새로운 `examples` 필드가 포함된 최신 버전 (JSON 스키마 2020-12)을 기반으로 했습니다.

- The Pod API field `.spec.schedulingGates[*].name` now requires qualified names (like `example.com/mygate`), matching validation for names of `.spec.readinessGates[*].name`. Any uses of the alpha scheduling gate feature prior to 1.27 that do not match that validation must be renamed or deleted before upgrading to 1.27. ([#115821](https://github.com/kubernetes/kubernetes/pull/115821), [@lianghao208](https://github.com/lianghao208)) [SIG Apps...

```

The server address variable is _required_. TLS is assumed to be on by default. The port in the server address is optional and defaults to 636 if not provided.

**MinIO sends LDAP credentials to the LDAP server for validation. So we _strongly recommend_ to use MinIO with AD/LDAP server over TLS or StartTLS _only_. Using plain-text connection between MinIO and LDAP server means _credentials can be compromised_ by anyone listening to network traffic.**

- DRA: client-side validation of a ResourceHandle would have accepted a missing DriverName, whereas server-side validation then would have raised an error. ([#124075](https://github.com/kubernetes/kubernetes/pull/124075), [@pohly](https://github.com/pohly)) [SIG Apps]