username unique constraint
From Dontopedia, the open, paraconsistent wiki. (Last updated 2026-06-07.)
username unique constraint has 5 facts recorded in Dontopedia across 2 references, with 2 live disagreements.
Maturity scale
raw canonical shape-checked rule-derived certifiedOther facts (3)
The long tail: predicates that appear too rarely to warrant their own section. Filter or scroll to find a specific one. Each row links to its source.
| Predicate | Value | Ref |
|---|---|---|
| Rdf:type | Constraint | [1] |
| Rdf:type | Constraint | [2] |
| Applied to Column | Username Column | [1] |
Timeline
Timeline axis is valid_time — when each source says the fact was true in the world, not when Dontopedia learned about it. Retracted rows are kept for provenance; coloured stripes indicate the context kind.
References (2)
ctx:claims/beam/8769b3dc-dc08-4d76-9935-c0166e90c298- full textbeam-chunktext/plain1 KB
doc:beam/8769b3dc-dc08-4d76-9935-c0166e90c298Show excerpt
1. **Primary Key and Indexes**: - Ensure that the primary key is properly indexed. - Add indexes to columns that are frequently queried, such as `username` and `email`. 2. **Data Types**: - Use appropriate data types to optimize s…
ctx:claims/beam/19ada42c-81a7-447a-bbe1-2b5719782b59
See also
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