How it works
Why does it behave this way?
- 1
From proof to hypothesis
Why can no system prove its data is right, and how do validation and reconciliation differ?
3 pages - 2
The free tier
Why are constraints free in one database and costly in a distributed one, and why is an unenforced one still dangerous?
2 pages - 3
Beyond one record
Why are cross-field rules cheap, and why does a cross-table check have a false-alarm floor?
3 pages - 4
Gates, quarantine, stop-the-line
Which actions can a failed check take, and why did dataset-level gating need a pointer swap?
4 pages - 5
Deduplication: three different problems in one word
Why does fuzzy matching have a recall ceiling, and why does loosening a threshold collapse clusters?
- 6
The reconciliation ladder
Why is detecting a difference cheap while locating it is the real cost?
6 pages - 7
What data quality can claim
What is the single claim of data quality, and what is still unsolved?