Appendix. Bibliographical Essay
Except for the 1983 and 1988 articles, all the references listed here are readily accessible by IT professionals. Those two articles are listed because of their seminal importance in the field of temporal data management.
1983: The Allen Relationships
James F. Allen. “Maintaining Knowledge About Temporal Intervals.” Communications of the ACM (November 1983), 26(11), 832–843. This article defined a set of 13 positional relationships between two time periods along a common timeline. These relationships are a partitioning of all possible positional temporal relationships. They are mutually exclusive, and there are no others.
1988: Architecture for a Business and Information System
B. A. Devlin and P. T. Murphy. “An Architecture ...

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