ABSTRACT
Equally important in the difficulties of Time Variance are the aspects of Time Variance that cause, and do not cause, a performance degradation. The tuple construct of temporal databases also attempts to optimize joins within and between Time Variant data. If a unique identifier simultaneously identifies a specific row in a table and resolves relational integrity issues that paired coupling of features is a bonus. The name given to the data element that serves the function of a unique identifier is Instance Key. Any one of a number of names would suffice. But, for the purposes of this explanation of this Time Variant Solution Definition, the name for the unique identifier is Instance Key. The Time Variant Solution Design has thus far dealt solely with Type 2 Time Variance. Type 2 Time Variance places all transactions and events in their original historical context.
