Knowledge

1. Overview of the Software development in Hue The Information Technology (IT) industry in Hue is becoming one of the key economic sectors of Thua Thien Hue province. Regarding achievements, software development in Hue has reaped a local revenue of more than 10,000 billion...

Along with the development of information technology and mobile devices, the development of multi-platform software is gradually becoming necessary for us. Not only is it compatible with many operating systems, but Cross-platform Development also provides a great user experience. To get an overview of...

SaaS (Software-as-a-Service) is becoming a dominant model in the era of digital transformation. Beyond saving infrastructure costs, SaaS brings flexible scalability, easy maintenance, and personalized user experiences. This article will help you master the effective SaaS development process and introduce you to partnership solutions...

Sorry, this entry is only available in 日本語. 入出金情報の管理のように、複数の更新処理を連続で実行し、関連性のある一塊のデータとして管理する必要があるシステムの場合、複数のデータ処理更新を1つの単位にまとめ、管理することが可能です。この処理単位のことを トランザクション と呼びます。 ブロックチェーン上ではトランザクション一つ一つをいつでも参照できるようになっています。 複数の連続更新処理を行う際に、全処理が無事に成功したときだけデータベースの変更を実行することができます。 また、何らかの原因によって一部の処理が正しく実行されなかったときは全更新処理をキャンセルして作業全体を取り消すことが可能です。...

In today’s digital world, optimizing user experience (UX) and user interface (UI) design is not just essential for attracting customers but also determines the success or failure of a product or service. “UI Testing” is a crucial process that ensures interface designs are not...

Nowadays, searching for information on the Internet is becoming increasingly popular and easy thanks to mobile devices. Normally, users will access the Internet to find information. There are many Web Apps and mobile applications that provide a great experience for customers thanks to their...

In the age of modern technology, GenAI or generative AI stands out as one of the most trendy technologies. From enhancing the efficiency and accuracy of current AI systems to providing fresh prospects for the creative industry, Generative AI is generating a buzz. 1....

The video game industry has been growing steadily in recent years. Millions of gamers are participating in NFT games and the Play to earn mechanism has attracted them to stick with the game more. If you are a newbie and want to learn about...

Sorry, this entry is only available in 日本語. 前回の記事で、 ブロックチェーンは３つの暗号技術を用いて不正を防いでいると説明しましたね。 参考：ブロックチェーンの不正を防ぐ3つの暗号技術 今回はその暗号技術を用いてブロックチェーン構造 がどのような構造になっているかを説明します。この記事を読めばきっとブロックチェーンという名称の由来がわかるでしょう。 １．仮想通貨はただのデータにすぎない  ブロックチェーンの構造を説明する前に、仮想通貨について触れたいと思います。本来、仮想通貨はただのデータに過ぎません。あなたが仮想通貨を誰かに送金するとき、「×時△分、○○にいくら払いました。」と台帳に記録されるだけで、その通貨は目に見えるものでも触れられるものでもありません。 このように、仮想通貨は台帳上の記録に過ぎないものですが、みんなが価値があると思うから通貨になりました。しかし、仮想通貨のようなデータが通貨として認められるためには必要な条件があります。 ”データが通貨として成り立つための３条件 送信者が誰か特定できる。 送信内容が途中で改ざんされない。 送信者が後で自分が送信したことを否定できない。 引用元：玉蔵（2017）『社会を根底から変えるシェアリングエコノミーの衝撃！仮想通貨ブロックチェーン＆プログラミング入門』株式会社ヒカルランド”  ブロックチェーン はその構造によって、３つの条件を満たすことができます。 ２．台帳が改ざんされないためのブロックチェーンの構造 （１）ブロックには前の取引情報も含まれる ブロックチェーン は前回の取引情報が次の取引情報に含まれる構造になっています。では、一郎さんからまい子さんへ送金する場合の取引記録を見てみましょう。 下記は一郎さんからまい子さんに渡されるブロックの中に含まれるものです。 前回までの取引記録のハッシュ値 取引内容「一郎⇒まい子　３ＢＴＣ」 まい子の公開鍵 一郎の署名 このように取引記録がひとつのブロックとしてまとめられて、次の取引に鎖状につながっていくことがブロックチェーンという名称の由来です。では、なぜ前回の取引記録まで次のブロックに送られるのでしょうか？ それは、ひとつのコインを改ざんして2人に送るといった「二重支払い」を防ぐためです。前回の取引記録をブロックに含めることによって、コインががどこからきたものなのかを明確にすることができます。これにより存在しないコインが送金されることを防いでいます。 これは二重支払いのような改ざんが起こってもすぐに分かるしくみです。ブロックBが改ざんされてブロックB’が作られたとしても、後に続くB’以降の全てのブロックのハッシュ値が全く違うものになる為、改ざんされてもすぐに分かるような構造になっています。 （２）改ざんを難しくするナンスの役割 それでは改ざんしたブロック以降を全て書き換えれば良いのでは？と思うでしょう。しかし、それを阻止する仕組みが存在します。それは、ナンスと呼ばれています。まず、実際の取引に使われているブロックのハッシュ値を見てましょう。 ここであることに気づきませんか？ ハッシュ値の先頭は０が並んでいますね。本来、ハッシュ化した場合、ランダムな数字が並ぶためこのようなことは起こりません。これは０が並ぶように意図的にデータに何らかの文字列を足しているのです。ここで足される文字列がナンスです。 上の図のように、ブロックをハッシュ化する際、ハッシュ値に０が並ぶまで何度もナンスの文字列を変えて計算を繰り返します。 このように適当なナンスを見つける作業をマイニングといいます。ナンスを見つけた人には台帳に書き込む権利が与えられ、報酬として12.5BTC（※）もらえる仕組みになっています。 ちなみに、マイニング（mining）の由来は、計算処理の報酬として仮想通貨が支払われることが、鉱山から金や銀を採掘するイメージと似ている為です。 マイニングはとても大変な作業ですが、報酬を得るために世界中で計算機を回して行われています。そして、ビットコインはこのマイニングからしか生まれないようになっています。マイニングはビットコインをはじめとする様々な通貨で採用されている方法です。 2019/9/5現在　1BTC＝約110万円のため12.5BTC＝約1400万円 （3）一番長いものが正式なブロックになる...

Blockchain is a buzzword that seems to pop up on a lot of topics about the future of technology. While the applications for this technology seem endless, not many people are entirely sure what blockchain is. In this article, we will introduce an overview...

Giới thiệu tổng quan về sử dụng AI trong kinh doanh Nếu bạn đã từng thử phát triển một chiến lược kinh doanh, bạn sẽ biết nó khó khăn đến mức nào. Rất nhiều tầm nhìn, tư duy thông minh và chú ý đến...

Logistics 4.0 is revolutionizing the way we manage supply chains, and Artificial Intelligence (AI) plays a key role in this transformation. AI not only helps reduce costs but also increases flexibility and efficiency, thereby enhancing competitiveness and the ability to respond quickly to market...

Cloud Computing is an extremely common term in the field of programming, design, and website administration. So what is Cloud Computing? What types of Cloud Computing pyramid services are there today? Get the details right through the following article with BAP Software! I. What...

1. Analyzing Salesforce cost for implementation  Implementing Salesforce can have 2 types of fees including installation and license costs. For Salesforce, you don’t need to pay the initial cost for installing the tool, so the cost of installation depends on the business’s deployment requirements....

The idea of blockchain has been around since the 90s. However, it was first introduced in 2008 as the distributed ledger behind bitcoin transactions. As blockchain continues to grow stronger and become more popular with users, have you ever wondered “How does blockchain work?”....

The ubiquity of the Internet and associated services creates several possibilities for companies and people. However, it does raise worries about cyber security dangers. The particular material below will give a wealth of important information, allowing readers to get a more in-depth view. 1....

SAP Cloud Platform is a cloud computing platform (PaaS) developed by SAP, enabling businesses to flexibly expand, integrate, and build applications on their ERP systems. In the era of rapid digital transformation, this platform has become a top choice for optimizing operations and accelerating...

Over the past decade, blockchain technology has become the subject of much research because of its decentralized, consensus, distributed, peer-to-peer transactions, etc. With the help of blockchain, many agreements are possibly done automatically by smart contracts. So what is a smart contract? How does...

What is Blockchain? Many people know it as a technology that underpins Bitcoin. But blockchain won’t just stop at Bitcoin or cryptocurrencies. This technology is expected to be applied more widely in many areas of life. So what does the future of blockchain look...

The NFT Play to Earn Game segment is extremely active in recent times when helping players entertain and generate income. Are you new to the cryptocurrency market? Do you want to join the NFT gaming trend but are afraid to invest capital when starting?...

In recent years, the IT industry has seen a shift from servers to the cloud, making cloud adoption an inevitable choice for businesses. Among various cloud platforms, Salesforce boasts the No.1 market share in sales and customer service cloud applications worldwide. In this article,...

The world is always moving and so are the financial markets. There are always trends appearing, attracting the attention of investors. DeFi is one of the prominent trends from 2020, especially in the crypto world. Until now, its heat has cooled down, but its...

When it comes to Web app or mobile application development, developers cannot ignore the Real-time updating aspect. This element uses time data to provide users with useful information, supporting users during remote work and other social activities. Real-time updating helps users update news and...

Developing information technology opens up many opportunities for related professions and fields, one of which is the concept of “IT infrastructure”. The following article will focus on providing useful information about IT Infrastructure and job development opportunities. 1. What is IT infrastructure? IT infrastructure...

Leading the technology race in the current 4.0 era is IoT or Internet of Things. This definition is gradually becoming familiar in life and business, it is widely applied and its benefits have been clearly demonstrated. In the article below, the author will provide...

Java is a programming language used in the development of web applications, desktop applications, and Android applications. This article is for those who want to develop web applications using Java or those who have started learning Java but still don’t clearly understand how Java...

NFT Game is probably a familiar name in the gaming industry as well as the cryptocurrency market. If you are a gamer, you must have experienced many interesting NFT games. But if you are new to this market, you probably still don’t fully understand...

The Embedded system is a very familiar term for programmers. In recent times, when IoT is becoming more and more developed, Embedded system is being used more and more. So what is the Embedded systems? In the following article, BAP Software will help readers...

1. Introduction: The Growing Need for IT Service Connectivity in the Digital Era As digital transformation becomes an inevitable trend globally, the demand for high-quality IT solutions is increasingly vital for businesses. From software development and system integration to advanced technologies like AI, Big...

IT Operations is not limited to simply “keeping systems running”; it is a critical factor in ensuring security, performance, and scalability. For CTOs and IT Managers, a clear IT operations checklist serves as a practical tool to control risks, optimize resources, and maintain system...