| 术语 | tree |
| 释义 | tree (语法)树 1. A hierarchical net; a multilevel data structure. It consists of a number of entities in “from top down” relationships and a specification of the orders in which they can be accessed. The entity of highest position (the entity that must be accessed first in order to access any other entity in the structure) is the root (also origin).The other entities of the structure are owners and members; they are connected for access purposes by pointers which may also be termed links, connectors, or relationships. 一种层次网或一种多级数据结构，它由一系列具有“自顶向下”关系的实体及其被存取的 顺序的说明组成。最顶端的实体(为了存取结构中任何其它实体而必须首先存取的实体)叫作 根(也叫原点)，结构的其它实体叫作主体和成员，它们以存取为目标通过指针连接起来。这些 指针也叫链路、连接器或关系。 参阅net, access path, tree diagram。 2. A term applied to hierarchical structure of entities; for example, to a company organization chart or a genealogy. 用在层次型的实体结构中的一个术语，例如，一个公司的机构图或一个家族的关系图。 |
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