I want to update schema in spice but it want to delete old relationships also, I any best practice avaiable for do so in genric way.

there isn't a way to automatically delete old relationships, and we do that for safety reasons - if you make a schema change that doesn't work the way you expect, we don't want you to lose data. we recommend using DeleteRelationships to remove old relations.

In order to connect to Spicedb-operatoer deployed on AWS with Kubernetes. How to connect with it. We have 2 data spicedb_url and GRPC key.

you'd need to set up ingress and then configure your client to talk to that endpoint with that preshared key

I am abble to connect with terminal, but not in my apis grpcurl \ -plaintext \ -H "Authorization: Bearer YOUR_SECRET_KEY" \ awslink:50051 \ authzed.api.v1.SchemaService/ReadSchema