Automated creation of join graphs for unrelated data sets among relational databases
US9507824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2015 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Aug 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system processes a plurality of unrelated database tables to create a join graph where each node in the join graph represents a table. The nodes in the join graph are connected by weighted, directed edges, where each directed edge represents a join from a first column in a first table to a second column in a second table and where the weight of the directed edge represents a predicted level of success in performing the join. The edge weights can be based on a likelihood of finding a value from the first column in the second column. A user selects a subset of the tables, and the system creates a join tree with recommended joins between the tables selected by the user. The recommended joins are used to create a structured query language statement which is executed to return a result to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.