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Datascript is an immutable, in-memory state store and schema-based triple store. It manages application state as a versioned database, storing data as immutable facts consisting of an entity, attribute, value, and transaction. The project provides a logic engine for executing Datalog queries with support for implicit joins, recursive rules, and negation. It also features a declarative pull API for retrieving deeply nested entity graphs and related data structures. The database enforces data integrity through schema-driven constraints and attribute types. It supports atomic transactions, plug

Memgraph is an in-memory, distributed graph database designed for high-performance labeled property graph management. It utilizes a Cypher query engine for declarative data retrieval and manipulation, providing a scalable knowledge graph backend that integrates vector search and graph traversals. The system distinguishes itself as a real-time graph analytics platform, employing native C++ and CUDA implementations to execute complex network analysis and dynamic community detection on streaming data. It provides specialized support for AI integration, including GraphRAG capabilities, the constr