Automatic attribute structural variation detection for not only structured query language database
US11093458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2019 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/211
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and a system are provided. A method includes automatically detecting, by an attribute structural variation detector, attribute structural variations in record schemas of a database lacking schema enforcement. The automatically detecting step includes encoding, by an encoder, nodes in the record schemas based on respective updated node labels to obtain a plurality of codes. The encoding step comprises, for each of the plurality of codes: recording, by a label frequency counter, a frequency f1 of the record schemas that include a given label; and recording, by a label frequency counter, a frequency fc of the record schemas that use a given one of the plurality of codes to update a label of a next level. An attribute variation is detected and retrieved responsive to the frequency fc≠0, and the frequency f1>(two times the frequency fc).
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