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Vol. I · No. 251
Mon · 8 Jun
A Daily Lexicon of Trustworthy Data
The Lexicon

005·14

physical data model

/ˈfɪz.ɪ.kəl ˈdeɪ.tə ˈmɒd.əl/ - n.

1 [colloq.] What was actually built, which the logical model has agreed never to look at directly.Keep. Punchy.This is the problem.

Working definition

2. The implementation-specific model defining tables, columns, types, keys, indexes, and constraints as deployed in a given platform.

Filed
See also
  • data dictionaryA faithful description of the column named 'cust_status_2_final', whose meaning died with its author.
  • denormalizationCopying the value into six tables so the dashboard loads faster, then learning which copy is wrong six tables at a time.
  • logical data modelThe clean diagram approved at kickoff, preserved unchanged precisely because the database stopped resembling it in week two.
  • schema designAn afternoon of careful structure followed by two years of columns named after the ticket that demanded them.
physical data model · Controlled Vocabulary