一款强大的开源图形数据库 Neo4j

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Neo是一个图形数据库（graph database）。它是一个可嵌入，基于磁盘的Java持久化引擎，其数据存储采用图形结构来代替表格。一张graph就是一种网状的结构图更适合于敏捷、快速开发。特性：能够以直观，面向图形的方式展示数据，网状结构图由节点，关联和属性组成。Neo能够在单一计算机上处理几十亿个节点，关联和属性。
一个强大的横向移动框架能够在节点空间中快速横向移动。整个Neo大小还不到500k。拥有简单、便利、面向对象的API。此外Neo包括一些数据库固有的特性：ACID事务支持，数据持久化, 并行控制, 事务恢复等。

开源项目主页地址： http://neo4j.org/

Neo is a graph database. It is an embedded, disk-based, fully transactional Java persistence engine that stores data structured in graphs rather than in tables. A graph (mathematical lingo for a network) is a flexible data structure that allows a more agile and rapid style of development.
You can think of Neo as a high-performance graph engine with all the features of a mature and robust database. The programmer works with an object-oriented, flexible network structure rather than with strict and static tables — yet enjoys all the benefits of a fully transactional, enterprise-strength database.


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