Schema Registry Validation and Storage

[prakashpsgcse]

We would like to understand few concepts related to schema registry validation.
Schema registry enforcement checks happens during producer registration. Once validation is successful, producer is registered in pulsar .

1. When actual messages are produced from producer client only version is attached to message or entire schema is also sent with message ?
2. When actual messages are produced from producer client is there any schema validation is happening at broker end ?
3. When messages is stored in bookkeeper , only message is stores as byte[] or only version and message is store or entire schema and message byte[] is stored ?