Uni-temporal and Bi-temporal table
Michal Kvet, Karol Matiaško · 2013
Data processing requires models for storing not only actual data, but also data, which validity ended in the past, but also data valid in the future. In addition, if the time of new state occurs, database system must provide the update without the user interaction. Data in uni-temporal model are bounded by validity, whereas bi-temporal model contains validity, but also transaction time to provide opportunities for storing updates of incorrect states.