Immutable Databases

 Immutable Databases

 

Fluree

Amazon QLDB - Ledger, hosted, non-open source that is "document-oriented data model". The query language is PartiQL, a new open source document query engine.

Oracle offers blockchain tables with its Oracle 21c database

immudb -  Ledger, immutable database based on zero trust, SQL/Key-Value/Document model, tamperproof, data change history, open source database written in Golang. Run client-server or embedded. Uses a subset of the PostgreSQL SQL dialect. Has a separate auditor to ensure your database has not been tampered with.

TerminusDB is a Version Controlled Database with immutable graph or document database with full schema and data versioning capability. Custom query language called Web Object Query Language (WOQL).

Trillian - open source database

Dolt - Git for Data. Version Controlled Database. In SQL, Dolt implements Git read operations (ie. diff, log) as system tables and write operations (ie. commit, merge) as functions. The only SQL database on the market that has branches and merges.

Gun DB - Realtime, Local-first, offline, and decentralized with end-to-end encryption. Claims support for "SQL-like tables, JSON-like documents, files and livestreaming video, plus relational and hypergraph data". Uses CRDTs to prevent conflicts and written entirely in Javascript. Uses WebRTC. 

 

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