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Distributed Systems
Published in Vivek Kale, Digital Transformation of Enterprise Architecture, 2019
A distributed database is a logically interrelated collection of shared data (and a description of this data), physically distributed over a computer network. The distributed database management system (DDBMS) is the software that transparently manages the distributed database.
Distributed Systems
Published in Vivek Kale, Enterprise Process Management Systems, 2018
A distributed database is a logically interrelated collection of shared data (and a description of this data), physically distributed over a computer network. The distributed database management system (DDBMS) is the software that transparently manages the distributed database.
Distributed Systems
Published in Vivek Kale, Agile Network Businesses, 2017
A distributed database is a logically interrelated collection of shared data (and a description of this data) physically distributed over a computer network. A distributed database management system (DDBMS) is the software that transparently manages the distributed database.
Blockchain technology in maritime supply chains: applications, architecture and challenges
Published in International Journal of Production Research, 2023
Jiaguo Liu, Huimin Zhang, Lu Zhen
Since blockchain was proposed in ‘Bitcoin: A peer-to-peer electronic cash system’ in 2008, its application has gradually evolved from an encrypted digital currency to a platform providing trusted services. From the perspective of data, blockchain is a distributed database. It connects data blocks based on a time sequence to form a chain data structure. From the perspective of accounting, blockchain is a distributed accounting technology or accounting system; that is, a blockchain is a ledger, and the block is each page of a roster. Each node on the block is a bookkeeper. Scholars have also published articles in ‘The Economist’ emphasising blockchain as a technical means that can build mutual trust without third-party supervision that can be used as the foundation protocol of the second generation ‘Value Internet’. In short, blockchain derived from Bitcoin distributed technology is an open ledger system based on the Bitcoin protocol. It is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanisms, and encryption algorithms (Dolgui et al. 2020).
Rain Drop Service and Biometric Verification Based Blockchain Technology for Securing the Bank Transactions from Cyber Crimes Using Weighted Fair Blockchain (WFB) Algorithm
Published in Cybernetics and Systems, 2023
Blockchain is a distributed database for direct transactions between parties. There is no need for any central authority most commonly used to alternate digital currency and perform transactions securely. Blockchain stores the user’s information in a distributed immutable ledger. Each block can be recognized through a SHA-256 at the block’s header. The block consists of two elements called the primary data and header. The primary data consists of a list of transactions, even as the header includes a hash of the previous and current block, Merkle Root, timestamp, nonce, and other information. Each node has been validating and passed the ledger to fellow nodes. The network can perceive any illegitimate ledger dispatched through an attacker node and quickly diffuse them. This manner is achieved through the use of a protocol known as the consensus protocol. There are many distinct consensus protocols evolved for the Blockchain. The most commonly used mechanism that is PoW consensus protocol has been used in Bitcoin.
The SLUMBAT Demo of Blockchain Based Nuclear Safeguards
Published in Journal of Nuclear Science and Technology, 2021
Edward Yu, Guntur D. Putra, Gabrielle B. Green, Cindy Vestergaard, Edward Obbard
Research connecting blockchain technology to nuclear safeguards has focused on identifying potential blockchain use cases [11], and assessing these based on suitability criteria [12]. A blockchain is a distributed database that is shared among and agreed upon by a peer-to-peer network. It consists of a linked sequence of blocks holding transactions secured by public-key cryptography [13]. An important advantage of blockchain technology in nuclear safeguards is the inability of network participants to reverse or modify a transaction once accepted by the network peers. Figure 2 explains the basis of this immutability. Transaction records are incorporated into blocks, each of which references the previous block by incorporating its hash, giving the blockchain its name. By matching it against the corresponding block on the network [14], participants can verify that a given transaction was validated by the network and has not since been modified. This practical immutability has made blockchain useful for financial transactions, identity management, and provenance tracking in supply chains [15]. The unique references between data blocks establish a clear historical record linking transactions to their predecessors [16]. If the blocks record physical assets, then this constitutes an enduring record of provenance.