Differentiating Blockchain Databases from Conventional Databases
Conventional databases
A conventional database is a centralized system used to store, manage, and retrieve data. It is controlled by a single organization or authority and allows authorized users to insert, update, and delete records easily.
Blockchain databases
A blockchain database is a distributed digital ledger where data is stored across multiple nodes in a network. Each block contains a set of transactions and is cryptographically linked to the previous block, ensuring data integrity and transparency.
Properties
The following properties highlight the key differences between conventional databases and blockchain databases.
| Property | Conventional Database | Blockchain Database |
|---|---|---|
| Immutability | Data in conventional databases is mutable. Authorized users can update, modify, or delete existing records directly. Older data can be overwritten and may not be preserved. | Data in blockchain databases is immutable. Once a transaction is recorded and added to the chain, it cannot be altered or deleted. Any update is stored as a new transaction, preserving full history. |
| Decentralization | Conventional databases are centralized. A single organization or server has complete control over data storage, access, and management. | Blockchain databases are decentralized. Data is distributed across multiple nodes, and no single entity has full control over the database. |
| Performance | Conventional databases offer high performance with fast read and write operations. They are optimized for large volumes of transactions and real-time applications. | Blockchain databases generally have lower performance due to consensus mechanisms, cryptographic validation, and network-wide agreement before adding transactions. |