Where to store the data of decentralized applications

Question

I already know that cryptocurrency is based on blockchain. I am aware of the working of blockchain but my confusion is that where does the data of decentralized application is stored?

Answer 1

Every blockchain is developed in a differnet way. Also there storage structure varies. If we take an example of bitcoin, it use level DB for storing the blocks of information on disk. whereas etherum uses' storage like a Redis, RocksDB or LevelDB for storage. A DAPP and its Smart Contracts may use this storage a page of hard-drive storage in a regular program.