Blockchain and HyperLedger Fabric difference

Question

While I am trying to understand the blockchain technology, I came across HyperLedger Fabric. As per the documentation, it is an implementation of blockchain technology.

What does that mean? Is block chain just a concept and HyperLedger Fabric, an implementation of that concept?

UPDATED: Where does the hyperledger fabric store the transactions? I understand that its a p2p architecture and every peer has a copy of the transactions, but usually these transactions is a growing set. Does every peer has a copy of growing transactions? I am not clear on this yet. Does the community recommend any database?

Answer 1

The Blockchain is an "idea" for how the data can be saved in distributed network. in Wiki it is defined as:

Block chain — is a distributed database that maintains a continuously-growing list of records called blocks. Each block contains a timestamp and a link to a previous block. The data in a block cannot be altered retrospectively.

There are many projects which utilize blockchain in its core:

• Bitcoin
• Ethereum
• Hyperledger
• etc.

Hyperledger - is not an implementation, it is Specification for how trusted network should work.

Hyperledger specification has several implementations from different vendors:

• Fabric - from IBM
• Sawtooth Lake - from Intel
• Corda - from R3 consortium
• Iroha - from Soramitsu

P.S. Each company tries to implement it's own vision of Hyperledger and currently these implementations are not compatible with each other.