In the earlier notes, we had seen a mechanism called time-stamping digital documents, a digital document sharing technique where multiple people can edit the document, and the entire traces will be captured and stored in the chain of blocks so that any malicious modification in the chain can be detected easily by the others. This …
Blockchain – Merkle Trees Read More »
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The blockchain concept came into the picture in 2011. However, it is not fully true. This concept was there earlier in one or another form, and it evolved gradually and became famous when this concept was used to design cryptocurrencies like Bitcoin. The first use of this concept of a cryptographically secured chain of blocks came …
Blockchain – Time-stamp a digital Document Read More »
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A Hash function is any function that can be used to map data of arbitrary length to fixed-size length. A trivial hash function is as follows: where and are integers and is the modular (remainder after division by ) operations. can be of any arbitrary length integer, but is within the range . However, this …
Blockchain – Cryptographic Hash Functions Read More »
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What is a Blockchain? A decentralized computation and information sharing platform enables multiple authoritative domains, who do not trust each other, cooperate, coordinate, and collaborate in a rational decision-making process. Important keywords Decentralized Computation and Information sharing platform Multiple Authoritative Domains Cooperate, Coordinate and Collaborate Rational Decision-making Process The important aspect of Blockchain is that we …
Blockchain – Introduction to blockchain Read More »
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in the context of a group or set of nodes or computers communicating to each other for cooperation, coordination, and collaboration in the application development process at the business intelligence process. Centralized Systems: Complete reliance on a single point. There is a central coordination system, and these nodes can communicate with the other nodes via …
Blockchain – Centralized vs. Decentralized vs. Distributed Systems Read More »
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To understand Blockchain, we need to understand what the need was and why the existing technologies could not solve the problems that we can solve using Blockchain Technology. Use Case (1): Information sharing among multiple parties First scheme without using Blockchain Technology: Alice wants to share some documents with Bob. Alice will write down her …
Blockchain – Foundation for the understanding of Blockchain Technology Read More »
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In this note series of descriptive statistics, we will learn about different measures to visualize, understand and quantify variable properties statistically. Before deep-diving into the nitty-gritty of various measures, we will learn about statistics and its essential terms. What is statistics? Statistics is the art and science of extracting answers from data. It helps in …
Descriptive Statistics – Introduction Read More »
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What are the differences between the Incremental and Evolutionary Software Development Process? In an incremental model, all the requirements are gathered before starting the incremental development process. In the Software Requirement Specification (SRS) document, the scope is defined and fixed based on the requirements. The entire development contract will be defined. However, the minor deviation …
SDLC – Incremental vs Evolutionary Software Development Process Read More »
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What is the difference between RAD and the Iterative waterfall model? Iterative waterfall model All product functionalities are developed together. It does not facilitate accommodating requirement change requests. The uses of the iterative waterfall model lead to the production of good documentation. Also, the developed software usually has better quality and reliability than that developed …
SDLC – RAD vs Iterative Waterfall Model Read More »
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What is the difference between the Prototyping and the RAD model? In Prototyping Model The development prototype is primarily used to gain insight into the solution. Choose between alternatives Elicit customer feedback The developed prototype is usually thrown away. In Rapid Application Development (RAD) Model The developed prototype evolves into deliverable software. RAD leads to faster development compared …
SDLC – Prototyping vs Rapid Application Development Model Read More »
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