From the course: Building an Ethereum Blockchain App: 1 Introduction to Blockchain

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Blockchain data and blocks

Blockchain data and blocks - Ethereum Tutorial

From the course: Building an Ethereum Blockchain App: 1 Introduction to Blockchain

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Blockchain data and blocks

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- Blockchain technology is all about adding data in such a way that we can trust data, but it's really all about data. Yes, we use transactions, but let's dig down and talk about data a little bit more. In traditional applications, we store data in a data store. It could be a flat file, it could be lots of other things, we typically think of of things as spreadsheets or databases. In any of those data repositories, support four main operations, and they're called the CRUD operations. That means we can create new records or create data, we can read the data back that we've already created and stored, we can also update the data, and that's very important, and of course, part of update is to delete or to get rid of it. So those four operations are called the CRUD operations. Now, think of an Excel spreadsheet. You create a brand new Excel spreadsheet, and you've got nothing there. So the first thing you do is you enter…

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