Blockchain vs Traditional Databases

Blockchain vs Database

Both store data, but they're built for opposite goals. Databases optimize for speed and control; blockchains optimize for trust and decentralization.

Comparison

Aspect	Blockchain	Database
Control	Decentralized	Central admin
Data changes	Append-only	Full CRUD
Speed	Slow	Fast
Trust	Trustless	Trust the owner
Cost	High	Low

When to Use Blockchain

• Multiple distrusting parties need a shared record.
• Tamper-proof audit trail required.
• No trusted central authority exists.

When a Database is Better

• You control the data and trust your system.
• You need speed and frequent updates.
• Most business applications!

FAQs

Is blockchain always better?

No — for most apps a traditional database is faster, cheaper, and simpler. More in our Blockchain section.

Can I update blockchain data?

No — you can only append. That's the point.