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Welcome to the mGraphDB manual

mGraphDB is an embedded graph database, published under the MIT License.

These pages collect the essential information about the project: its concepts, its architecture, and the plan that guides its development.

Project goals

• Provide several implementations sharing one design:
  • Rust — for performance and memory safety (primary implementation).
  • Swift — for direct integration into iOS / macOS software.
• Deliver a stable, embeddable database (SQLite-like footprint) exposing several abstraction layers.
• Schema-less: no type definitions required; ontologies and schemas are nodes in the graph, not engine-enforced constraints.
• Full ACID support is not a target for the moment.

Map of the wiki

Planning & process

• Software Development Plan — process, build system, quality gates, roadmap.
• Requirements — numbered functional and non-functional requirements.
• Test Plan — how each requirement is verified.

Design & architecture

• General Concepts — graph model and core ideas.
• Architecture — modules and how they fit together.
• Persistent Layer — on-disk record design (the "Small Profile").
• String Store — append-only deduplicated string subsystem.

Scratch

• Mermaid diagrams — diagram snippets.