Temporal database

Article summary

A temporal database stores data relating to time instances. It offers temporal data types and stores information relating to past, present and future time. Temporal databases can be uni-temporal, bi-temporal or tri-temporal. More specifically the temporal aspects usually include valid time, transaction time and/or decision time. * Valid time is the time period during or event time at which a fact is true in the real world. * Transaction time is the time at which a fact was recorded in the database. * Decision time is the time at which the decision was made about the fact. Used to keep a history of decisions about valid times.

Key claims

1. date of birth: 1975 — source: Wikipedia · confidence 0.95
2. date of birth: 1975-04-04 — source: Wikipedia · confidence 0.95
3. date of formation: 1992 — source: Wikipedia · confidence 0.95
4. publication date: 1994 — source: Wikipedia · confidence 0.95

Discussion questions

1. Summarise the article in your own words. Which single claim would you verify first, and why?
2. The record states that the date of birth is "1975". What evidence would count against this claim?
3. The record states that the date of birth is "1975-04-04". What evidence would count against this claim?
4. The record states that the date of formation is "1992". What evidence would count against this claim?
5. The record states that the publication date is "1994". What evidence would count against this claim?
6. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
7. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

1. Wikipedia https://en.wikipedia.org/w/index.php?oldid=1371187726