Summary

This chapter forms a crucial part of the physical implementation of temporality. You navigated through the object-level temporal architecture based on the primary key extension. Attribute granularity is formed completely differently. Instead of storing the whole state, only changed attributes are listed. The general solution applied between the attribute and object level is defined by temporal groups, which are composed dynamically and delimited by the group validity. Synchronization groups can be detected and processed as one attribute, decreasing the demands and requirements of the temporal reference layer. In principle, the attribute itself, as well as the whole object, can be covered by a group.

Each temporal state deals with the object reference, as well as the time dimensions, mostly expressing validity. The uni-temporal solution uses one dimension for the temporality while bi-temporal models use two, commonly expressing validity and transaction references. In this...