FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Blockchain Database does exist. A blockchain is a kind of database because it is a digital ledger that stores information in data structures called blocks. On the other hand, a traditional database is a data structure used for storing information.

Detailed explanation-2: -The ultimate goal of a blockchain is to store information, which makes it a database. Blockchains only differ from other database types by the way they store data. While blockchains can be considered a database, a database is typically not a blockchain. Databases generally don’t use signed blocks to store the data.

Detailed explanation-3: -A blockchain is a decentralized, distributed and public digital ledger that is used to record transactions across many computers so that the record cannot be altered retroactively without the alteration of all subsequent blocks and the consensus of the network.”

Detailed explanation-4: -Correct Option 2). A blockchain is a digitally distributed, decentralized, public ledger that exists across a network. A blockchain is a distributed database that is shared among the nodes of a computer network. As a database, a blockchain stores information electronically in digital format.

Detailed explanation-5: -The five standard types of transaction scripts are pay-to-public-key-hash (P2PKH), public-key, multi-signature (limited to 15 keys), pay-to-script-hash (P2SH), and data output (OP RETURN), which are described in more detail in the following sections.