What is the Difference Between a Blockchain and a Database?

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The technology of blocking is different from the traditional database architecture or the very principle of organization. The databases used on the Internet, as a rule, are based on the client-server architecture. In contrast, the introduction of blockchain provides for the principle of the absence of a single server and the equal participation of all users.

Decentralized management

When using a standard database, a user who has an account and a password to it can modify the records stored on the centralized server. Whenever he accesses the server through his computer, he sends an updated version of the information. The very control of the system is in the hands of the administrators who control its work.

In the blockhouse everything is arranged differently. After updating the data on the network, one of the participants uses all its nodes to confirm these changes. All information is stored on the computers of all users, and not on a single server, which ensures the protection of the system from threats of hacking and cyber attacks.

This makes the block system an ideally suitable storage system for information under certain conditions in various applications, where conventional databases are not the best option.

Block technology allows different parties that do not trust each other to exchange data without the participation of a central server. Transaction processing is carried out by users of the network, which play the role of a consensus mechanism.

The sense of the development of decentralized control in eliminating the risks of network centralization. When using a centralized database, anyone who has access to it is able to destroy, damage or change the information stored in it. In this situation, users are completely dependent on the server administrators.

In addition, securing centralized databases requires considerable cost and effort to maintain their security. For example, banks spend billions of dollars on maintaining current defense systems and new developments to counter potential cyberattacks. If administrators of a centralized system lose to hackers in this fight, then first of all the losses are borne by customers whose confidential information has become public.

Differences in the principle of data storage

Most centralized databases store information that is relevant at a particular time. They represent a kind of snapshot of this moment.

Blocking allows you to store the data currently relevant, as well as all information that relates to previous periods. The block chain is capable of storing the history of itself. Such databases grow and constantly expand the archives of their history, as well as provide a picture of the current situation in real time.

Disadvantages of the Blockchain

Although block technology can be used to record and store information and is an ideal platform for transactions, it is considered slow compared to traditional databases. Especially if you put it in a single row with technologies used in such payment networks as Visa and PayPal.

Despite a significant increase in productivity, the nature of the block chain also requires some victims. In particular, we are talking about speed. Distributed blocking technology means that the network does not work by combining the processing power of all nodes. Each of them functions independently in it, comparing the results of their work with other participants, until a consensus is reached about the changes that have taken place.

Centralized databases, in turn, have been used for more than a decade. Their productivity has increased significantly with the help of the formula used to determine innovation in the era of the digital economy, the so-called Moore law.


Blocking is an uncontrolled network. In fact, anyone can complete and add a new block to the platform based on the block chain and read it.

A block chain, like a centralized database, can be managed using a read and write system. This means that the network or protocol settings can provide for the possibility of making entries only by registered participants.

But, if confidentiality is the only goal, and trust is not a problem, then from this point of view database projects based on the blockbuster do not have advantages over a centralized way of storing information.

Hiding information in a block chain requires a large amount of cryptographic encryption, which is fraught with high computing load on network nodes. It is impossible to do this more efficiently than just completely hide the necessary information in a private, centralized database that does not even require an Internet connection.