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Transition constraint : ウィキペディア英語版 | Transition constraint A transition constraint is a way of enforcing that the data does not enter an impossible state because of a previous state. For example, it should not be possible for a person to change from being "married" to being "single, never married". The only valid states after "married" might be "divorced", "widowed", or "deceased". Transition constraint is commonly used in database models such as relational databases. ==References==
* (Modelling Transition Constraints (ResearchIndex) )
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Transition constraint」の詳細全文を読む
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