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Concepts

中文：概念索引

Concept map for contributors working with schemas, services, CLI, Web UI, MCP, and example packs.

Recommended Reading Order

  1. Object Graph Semantic Layer
  2. Workspaces And Domains
  3. Model Elements
  4. Entity Sets
  5. Datasets
  6. Links And Field Mappings
  7. Storage And GraphStore Providers
  8. Entities And Relations
  9. Query Surfaces

Concept Map

flowchart LR
  Workspace["Workspace"]
  Domain["Domain"]
  EntitySet["EntitySet"]
  DataSet["DataSet"]
  Storage["Storage"]
  DataLink["DataLink"]
  EntitySetLink["EntitySetLink"]
  StorageLink["StorageLink"]
  Entity["Entity records"]
  Relation["Relation records"]
  Query["Query Service"]
  Agent["AgentGateway / MCP"]

  Workspace --> Domain
  Domain --> EntitySet
  Domain --> DataSet
  Domain --> Storage
  EntitySet --> DataLink
  DataLink --> DataSet
  DataSet --> StorageLink
  StorageLink --> Storage
  EntitySet --> EntitySetLink
  Entity --> Query
  Relation --> Query
  EntitySet --> Query
  DataSet --> Query
  Storage --> Query
  Query --> Agent
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Concept Groups

Group Concepts Role
Scope Workspace, domain Keeps model and runtime data isolated and nameable.
Model definitions EntitySet, DataSet, Storage, Link Describes the semantic contract before runtime data is written.
Runtime graph Entity, relation Provides the actual object graph that Query Service can read.
Read surface .umodel, .entity, .topo Gives REST, CLI, Web UI, SDK, and MCP one aligned query path.
Storage abstraction GraphStore provider Lets the same public service run against memory, file-backed, or Ladybug-backed stores.

Source References