AN IMPLEMANTATION OF BITEMPORAL TEMPORAL RELATIONAL DATABASE MANAGEMENT SYSTEMS

This paper presents an implementation of a nested bitemporal relational data model that allows more than one level of nesting. the fundamental construct for representing temporal data is a bitemporal atom (bta) that consists of five parts: valid time period, the time periods’ lower and upper bounds this data is recorded in the database and a value. bitemporal data is attached to attributes and applied as an abstract data type. a number of examples of the management of nested bitemporal data model and queries to demonstrate the features of the model are provided. a prototype implementation has been completed in an object-relational database system to demonstrate the feasibility of the model.