Hyperledger Fabric数据库（关系/ NoSQL）

Question

I am a just starting out on trying Hyperledger Fabric and I am slightly confused on how it's ledger/blockchain part really works.

I've read that it has a World State Ledger and a Blockchain part, where the world state ledger uses LevelDB or CouchDB which I think is a NoSQL database? Is it possible to use a Relational Database for the State Ledger? If not, why must we use a NoSQL database? Also, does the blockchain part require a database, or else where and how do we look at its data, where is it stored? My questions might be abit conflicting as I am kinda confused right now about the Architecture of Hyperledger Fabric.

Answer 1

If you are a beginner in hyperledger fabric than keep reading this document

For your levelDB and CouchDB queries refer this

And if you want to know how actually fabric network works in short than refer this

And I recommend that first, you try to understand blockchain technology and how it is differently implemented by some frameworks like ethereum, hyperledger, corda, bigchainDB, EOS, etc...