What is POID

POID在数据库设计中的应用

最新推荐文章于 2023-04-25 11:01:58 发布

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最新推荐文章于 2023-04-25 11:01:58 发布

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原文链接：http://www.cnblogs.com/binlyzhuo/archive/2012/06/10/2543787.html

In database design, a Persistent Object Identifier (POID) is a unique identifier of a record on a table, used as the primary key. Important characteristics of a POID are that it does not carry business information and are not generally exported or otherwise made visible to data users; as such a POID has many of the characteristics of a surrogate key. The only purpose of the POID is to act as the primary key on the table where it is defined and to be referenced as the foreign key by other tables. Because POIDs, like surrogate keys, do not carry business information, they are immune to changes in the form or meaning of business data.

from:http://en.wikipedia.org/wiki/Persistent_Object_Identifier

转载于:https://www.cnblogs.com/binlyzhuo/archive/2012/06/10/2543787.html