Term of Award

Spring 2012

Degree Name

Master of Science in Computer Science (M.S.)

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


Department of Computer Sciences

Committee Chair

Vladan Jovanovic

Committee Member 1

Lixin Li

Committee Member 2

Wen-Ran Zhang


Sixth Normal Form (6NF) is a term used in relational database theory by Christopher Date to describe databases which decompose relational variables to irreducible elements. While this form may be unimportant for non-temporal data, it is certainly important for data containing temporal variables of a point-in-time or interval nature. With the advent of Data Warehousing 2.0 (DW 2.0), there is now an increased emphasis on using fully-temporalized databases in the context of data warehousing, in particular with approaches such as the Anchor Model and Data Vault. In this work, we will explore the concepts of temporal data, 6NF conceptual database models, and their relationship with DW 2.0. Further, we will evaluate the Anchor Model and Data Vault as design methods in which to capture temporal data. Using these methods, we will define a process for translating 6NF-compliant data into a standard eXtensible Markup Language (XML) Schema which can be used to describe and present such data to disparate systems in a structured format suitable for data exchange. Further, we will discuss benefits, advantages, and limitations to using XML representations of 6NF models for the transfer of data into a data warehouse.

Research Data and Supplementary Material