这个方法用概率估计模型和星型模型来评价线网的走线。
In this approach, the methods of probability estimation and star model are used to evaluate the routing of nets.
文章最后提出了在星型模型中构造维的层次结构的基本过程。
Finally, it proposes the basic steps to constructs hierarchy in star schema.
使用这些简化的分析问题来决定最终的星型模型中包含什么以及排除什么？
Use these simplified analysis points to decide what to include and what to exclude in your final star model.
传统的ER模型具有均匀且平衡的实体样式和实体之间的复杂关系，而星型模型却是完全不对称的。
Whereas the traditional er model has an even and balanced style of entities and complex relationships among entities, the star model is very asymmetric.
但是，基于星型模型的数据仓库中的维表的纠错改变和自然改变将会引发概括数据的不正确问题。
But the corrective and natural changing of dimensional tables based on star schema make the aggregate data false.
然而，雪花型的结构看起来更复杂，并且可能趋于使业务用户用起来感到不如更简单的星型模型舒服。
However, the snowflake structure seems more complex and could tend to make the business users feel more uncomfortable working with it than with the simpler star model.
本图是简单星型模型设计图，中间是一张事实表，还有其相关维度，本例中是促销活动、产品、时间。
The diagram shows a simple star schema design with one fact table in the middle and its related dimensions, in this case, promotions, products, and time.
在扩展星型模型的基础上，设计了多维逻辑模型和物理模型，并给出了一种具有通用数据访问接口的OLAP模型生成方案。
Basing on the extended star model, We design logical and physical data model of OLAP and provide a solution to create OLAP data model having general interface of visiting data.
数据库设计师长期使用术语“星型模式”来描述维度模型，因为结果结构看上去像一个星星。
Database designers have long used the term "star schema" to describe dimensional models because the resulting structure looks like a star.
星型模式已经成为一个公共术语，用于表示维度模型。
Star schema has become a common term used to refer to a dimensional model.
星型模式已经成为一个公共术语，用于表示维度模型。
Star schema has become a common term used to refer to a dimensional model.
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