persistent object identifier
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Names in other languages
- caidentificador d'objecte persistent
- РусскийПостоянный идентификатор объекта
- nbvedvarende objektidentifikator
- slidentifikator trajnega objekta
- Englishpersistent object identifier
- 中文永久对象标识符
Article bodies are English and are not machine-translated. A name in another language is not a translation of the article.
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. It can therefore make it easier to maintain relations between objects and make queries simpler.
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. It can therefore make it easier to maintain relations between objects and make queries simpler. ==See also== Natural key Primary key Surrogate key Unique key Object identifier ==External links== Persistent Object ID Service What is a Persistent Object Identifier and why should I care? Persistent Object
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