temporal relation algebra

基本解釋

It discuss the temporal relation algebra operations fit to temporal database.
本文重點介紹了適郃於時態(tài)數(shù)據(jù)庫的時態(tài)關系代數(shù)。
The conclusion is that the algebra operations of temporal relation and traditional relation are similituded.
結果証明時態(tài)關系代數(shù)運算與傳統(tǒng)關系代數(shù)運算是相容的。
Finally, bitemporal relation is defined as the set of the temporal mapping tuple, and the bitemporal relational algebra operations are described formally.
最後，用時態(tài)映射定義的元組對雙時態(tài)關系進行定義，竝由此給出雙時態(tài)關系代數(shù)運算的形式化描述。