Blockchain vs Traditional Database: What are the advantages of distributed operation?

Source: Internet
Author: User

The concept of blockchain (blockchain) is becoming more and more hot because of the flourishing of virtual currencies such as Bitcoin, which in fact can be used in many other fields because of the special design ideas. As a distributed data storage model with high fault tolerance, what are the differences between blockchain and traditional database? To answer this question, we need to look at how they operate.

A distributed node of the blockchain.

Traditional database

Traditional databases use a client-server network architecture. In this structure, the user (or the client) can modify the data stored in the central server. The control of the database is maintained at the institution where the specified authority is obtained, and they authenticate the user before attempting to access the database. Because the authority is responsible for the management of the database, if the authority's security is compromised, the data is at risk of being modified or even deleted.

Blockchain database

A blockchain database consists of several scattered nodes. Each node participates in data management: All nodes validate new additions to the blockchain and write new data to the database. For new content that joins the blockchain, most nodes must agree to write successfully. This consensus mechanism ensures network security and makes tampering with content very difficult.

Blockchain is the most interesting example of Bitcoin (Bitcoin), in bitcoin, consensus through the "mining" to achieve (using computer to calculate the solution of complex hashing problem), and in another famous case of Ethereum, the consensus mechanism is the equity certificate (POS) to complete.

Completeness and transparency

One of the characteristics of blockchain technology that distinguishes it from traditional database technology is its public verifiable nature, which is achieved through completeness and transparency.

Completeness: Every user can be assured that the data they retrieve will not be corrupted or rewritten from the moment they are recorded.

Transparency: Each user can learn and verify how the Blockchain content changes over time.

CRUD vs Read & Write operations

In traditional databases, customers can perform four operations on data: Create, read, update, and delete (called CRUD commands).

And the blockchain can only be increased. The user can only add data as an additional block, and all previous data is permanently stored and cannot be changed. Therefore, the blockchain can only perform the following actions:

READ: Querying and retrieving data with blockchain;

Write: Add more data to the blockchain.

Authentication and writing

The blockchain has these two functions: Transaction verification and new transaction writing. Trading is an operation that alters the state of data on a blockchain. The previous entries on the blockchain will always remain the same, and the new entry can change the state of the data in the previous entries. For example, if a blockchain record has 1 million bitcoins in my Bitcoin wallet, that number is permanently stored in the blockchain. When I spend 200,000 bitcoin, the transaction is also recorded on the blockchain and my balance is 800,000 bitcoin. However, since the blockchain can only continue to grow, the balance of 1 million Bitcoin before this transaction is still permanently stored on the blockchain. This is why blockchain often refers to a distributed ledger that cannot be changed.

In short, the difference lies in the central control, de-centralized control to eliminate the risk of centralized control. Anyone with full access to the centralized database can destroy or destroy the data in it, so users rely on the database administrator's security infrastructure.

Blockchain technology uses de-centralized data storage to circumvent this problem and establish security in its own structure.

Blockchain technology is good for documenting certain kinds of information, and traditional databases are better suited to record other kinds of information. For each organization, it is critical to understand what it wants to get from the database, and we need to determine the pros and cons of each database before selecting the database. This article is published by: Http://www.267774.com finishing.

Blockchain vs Traditional Database: What are the advantages of distributed operation?

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