Supporting pluggable databases with heterogeneous database character sets in a container database
US10635675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Jan 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/273
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pluggable database (PDB) that is encoded using a particular character set (differing character set) may be plugged into a container database (CDB) and queried, even when the CDB in which the particular PDB resides is encoded using a different character set. The DBMS records what character set is used to encode the PDB. Any predicate that may prune results from a PDB that is encoded in a differing character set is converted to the differing character set as needed, such that the predicate may be applied within the PDB to prune results. At times, cross-container views will require data from a PDB that is encoded using a differing character set. The data returned from a recursive query over the PDB is converted to being encoded using the character set of the root database of the CDB.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.