A data structure called a Directed Acyclic Graph (DAG) is used in blockchain technology and computer science to organize and represent information without cycles or loops. It is a graph in which no pathways lead back to the beginning point and where edges have a distinct direction.
As an alternative to standard blockchain architecture, DAGs are used in various blockchain platforms, such as IOTA and Nano, to provide advantages including scalability, quick transactions, and low resource consumption.
Decentralised Autonomous Organizations (DAOs) are blockchain-based organizations that function independently and without a central authority through predefined smart contracts. They provide for open and democratic decision-making processes because they are guided by participant consensus.
A decentralized network's distributed ledger is a database that is updated and synchronized across numerous nodes or computers. Without the requirement for a centralized authority, it enables participants to securely and transparently record, preserve, and amend transactions or data. Blockchain systems are based on distributed ledger technology, which offers an unchangeable and impenetrable record of all network activity.