what is a miner? an algorithm that predicts the next step in a blockchain. a type of blockchain. a computer user who validates and processes blockchain transactions. a person who is authorized to delete blocks from a blockchain.

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Answer 1

A miner is a computer user who validates and processes blockchain transactions. They use their computing power to solve complex mathematical equations and add new blocks to the blockchain.

Miners are incentivized to do this work through the reward of cryptocurrency for their efforts. Blockchain is a decentralized, digital ledger of transactions that is distributed across a network of computers. Each block in the chain contains a record of several transactions and a unique code, called a hash, that identifies the block and all the transactions within it. Once a block is added to the chain, it cannot be altered or deleted, making it a secure and tamper-proof record of all transactions on the network.

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Related Questions

Kay is researching the health benefits of avocados.She finds an article on the website tracyshealthproducts.com.Which of the following can assure Kay that the content is credible?
A) The site sells products made from avocados.
B) The article's author has been a nutritionist for the last three years.
C) The firm that runs the site is located four blocks from her home.
D) The author has over 8,000 connections on LinkedIn.

Answers

The option that can assure Kay that the content is credible is B) The article's author has been a nutritionist for the last three years.

This option indicates that the author has professional experience and expertise in the subject matter. It suggests that the author has likely undergone training and has knowledge in nutrition, which could make their article more credible.

However, it's still important for Kay to critically evaluate the article's content, sources, and information to determine its accuracy and reliability. Additionally, Kay should look for additional sources and information to corroborate the information presented in the article.

Thus, option (B) The article's author has been a nutritionist for the last three years.

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what solution puts the stolen vehicles database in 3nf by breaking up this one big table into several tables?

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To convert the stolen vehicles database into 3NF (Third Normal Form), the big table should be broken down into several smaller tables that contain the necessary information.

The process involves the following steps:
1. Identify the columns that contain the same data in multiple records, and create a new table for each of these columns.
2. Make sure that each table contains a primary key that uniquely identifies a record, as well as other attributes which together form a composite key.
3. Define relationships between tables, either one-to-one or one-to-many.
4. Make sure that each table contains only the information that is necessary for it, and that all other data is moved to other tables.
5. Check for anomalies such as insertion, update, and deletion, and take care of them by creating more tables or modifying the existing ones.

By following these steps, the big table can be broken down into several smaller tables and the stolen vehicles database can be converted into 3NF.

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