It is good to have blockchain experience as a web developer. blockchain database types are a type of no-sql data bases. some blockchains such as ethereum, tron and eos can host the backend logic of your application as smart contracts which will inherit the database functionality of the blockchain database even though it is within the said database. the core functionalities of smart contracts are immutable. smart contracts can be interacted with it's abi similar to how you would connect to an api. there is a strong and permanent future for blockchain technology.