Efficient method to find columns of a table which are unique
US12026139B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jun 13, 2022 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Aug 13, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2282
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One example method includes identifying a column of a table, and the column includes multiple entries, setting a proposed uniqueness for the column, setting a confidence tolerance for the proposed uniqueness, estimating a sub-sample size for the column based on the proposed uniqueness and the confidence tolerance, based on the sub-sample size, sampling a subset of the entries in the column and, based on the sampling, determining whether or not the column is a primary key for the table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.