区块链跟大数据有关系吗,区块链跟大数据的ppt

㈠ Blockchain development or big data development, which one tests coding skills more

Big data development.
Da Shu Zen data development requires Kaiyun to process massive data and be proficient in distributed computing, data mining, machine learning and other technologies. Big data development requires processing different types and formats of data, and performing data cleaning, conversion, aggregation and other operations; therefore, big data development requires a high level of coding skills.
Blockchain development refers to the use of technology to build and maintain distributed databases, systems that can be used to store and manage data.

㈡ What is blockchain and what is big data

1. Blockchain: It is a new type of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Application mode. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.

Blockchain is an important concept of Bitcoin. The currency jointly released the "2014-2016 Global Bitcoin" by the Internet Finance Laboratory of Tsinghua University PBC School of Finance and Sina Technology. "Coin Development Research Report" mentioned that blockchain is the underlying technology and infrastructure of Bitcoin [2]. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction and is used to verify the validity of its information (anti-counterfeiting) and generate the next block.

2. Big data: refers to a collection of data that cannot be captured, managed and processed within a certain time range using conventional software tools. It requires new processing models to have stronger capabilities. Massive, high-growth and diversified information assets with decision-making power, insight discovery and process optimization capabilities.

㈢ Big Data and Blockchain

This story still has to start with Bitcoin

Bitcoin, an electronic cash system, is simultaneously disintermediated ( Electronic cash between individuals does not require the intervention of a trusted third-party intermediary) and is decentralized (maintained by an institution) (both parties to the transaction can complete transactions without establishing a trust relationship)
< br /> Hash function: Convert an arbitrarily long string into a fixed-length output (the calculation process cannot be too complicated). As long as the input string changes slightly, the output of the hash function will be completely different.

Blockchain: Divide large things into many blocks for storage. As long as one thing is tampered with, the data below will be different and it will be discovered

Uses blockchain (data structure hash function) to ensure that the ledger cannot be tampered with, uses digital signature technology to ensure that only you can use your own account, and uses p2p network and POW consensus mechanism to ensure decentralizationHow it works

Blockchain uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, and uses cryptography to ensure data transmission and access security. A new distributed infrastructure and computer paradigm.

Three elements:

The essence of blockchain is a distributed ledger, a kind of database. The blockchain uses a hash algorithm to ensure that information cannot be tampered with, uses public keys and private keys to identify identities, and collectively maintains a reliable database in a decentralized and disintermediated manner.

The differences between big data and blockchain are mainly reflected in the following aspects.

(1) Data volume. Blockchain technology is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. The amount of data processed by blockchain is small and has a meticulous processing method. Big data manages massive amounts of data, which requires breadth and quantity, and the processing methods will be rougher.

(2) Structured and unstructured. Blockchain is a block with a rigorously defined structure. The chain composed of pointers is a typical structured data, while big data needs to process more unstructured data.

(3) Independence and integration. In order to ensure security, the blockchain system's information is relatively independent, while the focus of big data is the integrated analysis of information.

(4) Direct and indirect. Blockchain is a distributed ledger, which is essentially a database, while big data refers to in-depth analysis and mining of data, which is a kind of indirect data.

(5)CAP theory. C (Consistency) means consistency, which means that any read operation can always read the result of the previously completed write operation. That is, in a distributed environment, data at multiple points is consistent. A (Availability) refers to availability, which refers to obtaining data quickly and returning operation results within a certain time. P (Tolerance of Network Partition) is partition tolerance, which means that when a network partition occurs (that is, some nodes in the system cannot communicate with other nodes), the separated system can still operate normally. CAP theory tells us that a distributed system cannot meet the three requirements of consistency, availability, and partition tolerance at the same time. It can only meet two of them at the same time. As the saying goes, "You can't have your cake and eat it too." Big data usually chooses to implement AP, and blockchain chooses to implement CP.

(6) Basic network. The underlying infrastructure of big data is usually a computer cluster, while the infrastructure of the blockchain is usually a P2P network.

(7) Source of value. For big data, data is information and needs to beValue is extracted from the data. For blockchain, data is an asset and the inheritance of value.

(8) Calculation mode. In the big data scenario, one thing is assigned to multiple people. For example, in the MapRece computing framework, a large task will be decomposed into many subtasks and assigned to many nodes for calculation at the same time. In the blockchain scenario, multiple people are allowed to do one thing repeatedly. For example, many nodes in the P2P network record a transaction at the same time.

㈣ Title: With the help of big data and blockchain, what do you think the future development model of the accounting information system should be?

The connection with other subsystems will be strengthened to manage information to the enterprise. The system moves closer.
With the development of computer technology, big data and blockchain, two of the most eye-catching cutting-edge technologies nowadays, are gradually being applied in practice. As one of the indispensable professions in any industry, accounting is bound to be affected by these two emerging technologies. Big data technology has caused an explosive growth in the quantity of accounting information, and the birth of blockchain technology has improved the accuracy of information. Therefore, the accounting profession will usher in new developments in breadth and accuracy.
With the emergence of paperless accounting, accounting computerization is widely used in various enterprise management and settlement services. Kingdee UFIDA and other similar software came into being. By setting login identities and permissions, and directly entering relevant transaction capital business and other matters on the network management platform, work efficiency is greatly improved. The computerized accounting software uses a large and stable database, and the financial system is constructed in a modular manner to build the entire system, making accounting more standardized and improving the management level of the enterprise. At the same time, ERP systems also have many shortcomings. However, the upgrading of accounting software is far behind the innovation of computing and computer systems, and the stagnation of accounting software development has largely restricted the further development of the entire financial accounting industry. Second, employees must log in to the accounting information system through encrypted login methods. However, it is still unavoidable that some criminals can steal the operator's login password to conduct illegal operations and forge accounting data, which lacks authenticity during the current operation. Log monitoring cannot effectively prevent this behavior. Third, the professional module processing is not targeted and the operation is too cumbersome. The query and inventory are rough and prone to errors and omissions. Fourth, the calculation method of cost, depreciation and depreciation apportionment is accurate in calculation but in fact the method is extensive and the workload is large. Whether it is manual accounting or computerized accounting, the inability to obtain relatively accurate product costs in a timely manner has not solved the problem of data.

5 What are the applications of big data, cloud computing, new algorithms and blockchain in computational advertising

1. Algorithm. You can accurately push ads based on the viewer's interests and hobbies, so that the viewer can click on the advertisement.
2. Portraits. Label multi-dimensional "portraits" based on the user's level and interests. Laming
3. Geographic fencing. Based on the user's registration information, the user's geographical location is accurately determined.
4. Effect transformation. Multi-dimensional game based on userZha Dimension Portrait accurately determines user needs, enables users to click to purchase, and achieves conversion in advertising and marketing effects.
5. Accurate capture. When users click to browse ads, traces will be left, and the user's mobile phone code information can be captured based on the traces.

㈥ What is the role of blockchain in big data

[Introduction] Big data brings great opportunities to all walks of life, but it also brings many challenges. Blockchain, with its decentralization, trustlessness, high transparency and non-tampering characteristics, can provide higher security, transparency and privacy to big data. So, what are the effects of blockchain in big data?

1. Improving data quality

The essence of blockchain is to remove Centralized distributed ledger. It can also be understood as an tamper-proof, fully historical, distributed database storage technology. Therefore, blockchain technology can liberate more data. The trustworthiness, security, and non-tamperability of blockchain technology fundamentally bring about the improvement of data quality and the enhancement of data verification capabilities.

2. Dealing with the data island problem

Big data has a very serious data island problem, and a lot of data is currently inaccessible. Blockchain is expected to solve this problem. The reason why I say this is mainly because the blockchain is not only a distributed ledger, but also has the characteristics of decentralization and openness. As the maintainers of order in the financial market, regulatory organizations can also predict and analyze possible dangerous problems through the data chain in the blockchain.

3. Dealing with data leakage issues

In essence, the blockchain is actually a decentralized database. Therefore, if data from a certain node in the blockchain is If there is a change, other nodes will discover it as soon as possible, so the possibility of data leakage will be greatly reduced. Only in the form of a private key can the identity information of each node in the blockchain be successfully obtained, and only the data owner can know the private key.

4. Blockchain can protect the relevant rights and interests of data

As for the valuable data assets of individuals or organizations, they can be registered using the blockchain, and the transaction records are recorded on the entire network. Recognized, transparent and traceable. Clarifying the source, ownership, use rights and circulation path of big data assets is of great value to the sale and purchase of data assets.

5. Traceability of blockchain

Every step of data collection, transaction, circulation, and accounting analysis can be recorded on the blockchain, thus making Data quality has received unprecedented strong trust endorsement. At the same time, it also ensures the accuracy of data analysis results and the effectiveness of data mining.

The above is all the content that the editor has compiled and sent to you today on "What is the role of blockchain in big data?" I hope it will be helpful to everyone. As the saying goes, if you don’t fight an unprepared battle, generally speaking, with the application of big data in many industries, engineers and developers with big data technology work capabilitiesThe staff is very popular.

㈦ The internationalization strategy of Ouke Cloud Chain has been upgraded to create multi-lingual blockchain big data services

Since the introduction of the new infrastructure policy, blockchain has become a key development industry in my country , has appeared in the "Government Work Report" documents of more than 20 provinces, and was successfully selected into the "14th Five-Year Plan", becoming one of the seven key industries of the digital economy. With the support of various policies, my country's blockchain industry has developed rapidly. Many companies are deeply involved in digital government affairs, certificate storage and anti-counterfeiting, etc., and have opened up the implementation scenarios and development potential of the blockchain economy.

In the blockchain big data track, Ouke Cloud Chain and other companies combine blockchain, big data, artificial intelligence and other technologies to continue to launch OKLink blockchain browser, on-chain Sky Eye, on-chain Products such as Master have made important contributions to my country’s blockchain technology innovation. Recently, the official website of OKLink has added nine new languages. While serving millions of domestic users, it also provides blockchain big data services to 50 million users around the world, basing itself on the domestic market and exploring the global market.

Nine new languages ​​have been added, covering 50 million users around the world

On December 3, the blockchain big data company Ouke Cloud Chain announced that nine new languages ​​​​will be added to the OKLink official website , based on the original Chinese (Simplified and Traditional) and English, nine new languages ​​are added: Russian, German, Turkish, French, Spanish, Portuguese, Vietnamese, Korean, and Japanese.

Ouke Cloud Chain is one of the earliest native blockchain companies in China. Since its establishment in 2013, it has been committed to the research and development of blockchain big data/security products. It has continuously launched the OKLink block Products such as Chain Browser, Chain Eye, and Chain Master serve millions of domestic users. Together with blockchain data service providers such as Chainalysis and Messari, they enjoy a high reputation in the global blockchain industry.

"This time Ouke Cloud Chain has added 9 major languages. Ouke Cloud Chain will provide data services to more than 50 million blockchain industry users around the world, and will build a transparent and open blockchain chain. At the same time, it will protect the healthy development of the global blockchain industry." said Zhang Chao, Vice President of Ouke Cloud Chain.

In recent years, the global blockchain industry has entered a period of rapid development. Global industrial giants such as Facebook have launched industrial layouts. my country has also launched a number of supporting policies and achieved important results in such scenarios. Ouke Cloud Chain continues to work hard on the blockchain big data track, giving my country a first-mover advantage in this industry sector. Ouke Cloud Chain going global is not only the success of its innovative products such as Sky Eye on the chain, but also the initial practice of its steady and steady globalization strategy.

Steady progress, internationalization strategy continues to upgrade

In August this year, Ouke Cloud Chain joined the Global Digital Finance Organization (GDF), becoming the only member of the GDF Advisory Board from China, and joined Established the GDF KYC/AML/CTF working group. twoWeeks later, Ouke Cloud Chain once again announced that it would join the U.S. Digital Chamber of Commerce (CDC) and become a member of the CDC’s President’s Circle. It is reported that CDC is a business association focusing on the digital assets and blockchain industry. It is well-known around the world. Its members include global technology giants and leading blockchain institutions such as Microsoft, J.P. Morgan, Mastercard, Fidelity Investments, and Messari.

After joining two major global industry organizations, Ouke Cloud Chain actively participated in various international conferences within the organization, and worked with Goldman Sachs, Representatives of international financial giants such as Standard Chartered, PayPal, and Visa exchanged opinions on industry development and repeatedly fed back their opinions to the Bank for International Settlements and the International Monetary Fund, making China's voice heard in the international blockchain industry dialogue.

The launch of OKLink in nine major languages ​​is an important move under the guidance of its internationalization strategy. It will further open the door to the international market and provide global users with convenient and accurate regional services. Blockchain data service. Since then, with the support of multiple languages, blockchain users in Germany, France, Japan, South Korea, Vietnam and other countries will more conveniently obtain on-chain data on the OKLink official website and grasp the overall trends of the blockchain market. And through the use of products such as on-chain Sky Eye, the security of assets on the personal blockchain chain is ensured.

New businesses represented by blockchain technology have become a new engine driving the revenue growth of Ouke Cloud Chain. On July 26 this year, Ouke Cloud Chain Holdings (01499.HK) released its annual report for fiscal year 2021. The report shows that as of March 31, 2021, Ouke Cloud Chain achieved total revenue of HK$453 million, with outstanding performance in technical services, securities investment and trust and custody services, driving the annual gross profit margin to increase by 2.8 percentage points to 10%. 10.3, profitability growth momentum is strong.

Zhang Chao said, "Ouke Cloud Chain will continue to adhere to the internationalization strategy, take technological innovation as the background, and target the development needs of the times, and work steadily to expand the blockchain of Ouke Cloud Chain. Promote data services to the world market, create world-class brand services, explore blockchain scenarios and applications, while promoting the development of the blockchain industry, promote the transparent, healthy and compliant development of the industry, and help our country with blockchain technology innovation Digital economy development process”.

This article comes from the financial industry