- RESTful
- 内存型
- 不支持事务
- 数据为文档
- id: Option[Long],
- name: String,
- fromList: mutable.Buffer[Relationship],
- toList: mutable.Buffer[Relationship],
- document: Document
- id: Option[Long],
- name: String,
- from: Node,
- to: Node,
- document: Document
- id: Option[Long],
- typeName: String,
- data: Map[String, AnyRef]