Object oriented database management system
US5838965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1994 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Nov 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99944
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A database management system is disclosed having an object oriented representation of information describing characteristics of instances organized in a hierarchical structure that may be logically represented as a tree structure. The hierarchical structure includes a parent-child/class-subclass structure. The internal representation of an instance is dependent upon information that is locally available from a class to which that instance belongs plus inherited attributes from a parent class. A class is represented as a class object having a handle. The class object has a parent handle associated with it that identifies the parent class of the class object. The class object has a subclass list associated with it that identifies the handles of the classes that are subclasses of the class object. The class object has an attribute list associated with it that includes a list of handles which may be used to identify the attributes of the class object. A class object also includes a subtree instance count which represents the total number of instances that belong to that class object plus the total number of instances that are present in all of the descendants of the class object, i.e.,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.