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Enforcing temporal uniqueness of index keys utilizing key-valued locking in the presence of pseudo-deleted keys
Enforcing temporal uniqueness of index keys utilizing key-valued locking in the presence of pseudo-deleted keys
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机译：在伪删除键的情况下利用键值锁定来增强索引键的时间唯一性
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摘要
Techniques are described for identifying conflicts between an index of temporal keys and a prospective temporal key. The prospective temporal key specifies a prospective range of time. Embodiments scan the index to identify a first temporal key that potentially conflicts with the prospective temporal key. The first temporal key specifies a first range of time and is identified based on a comparison between the first range of time and the prospective range of time. Embodiments determine whether the prospective temporal key conflicts with any temporal keys in the index, where the prospective temporal key conflicts with the first temporal key if the first range of time overlaps with the prospective range of time and the first temporal key is not a pseudo-deleted key, and such that the prospective temporal key does not conflict with any temporal keys if the temporal key does not conflict with the first temporal key.
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