Can I query Hyperledger Fabric ledger or update ledger without chaincode in peer?

I have simple question about Hyperledger Fabric. so here is my question:

I know that for committing peers (ordinary peers) it's not 100% necessary to have chaincode installed, but every peer should have ledger and that's 100% necessary.

so suppose I am committing peer and I have not chaincode installed, but I have ledger of course. Now new block arrives from ordering peer.

1) I should check blocks validity, so I need to query ledger

2) I should add this block, so I need to update ledger.

So how can I do this two above without chaincode? Isn't chaincode necessary for above operations? (query and update)

#blockchain #hyperledger #bitcoin #cryptocurrency