Object-oriented query mechanism
April 1, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesJoin operation processing system in distributed data base management system Method and apparatus for accessing a relational database without exiting an object-oriented environment Automatic storage of persistent ASN.1 objects in a relational schema Unit of work for preserving data integrity of a data-base by creating in memory a copy of all objects which are to be processed together Method for evaluating relational database queries with automatic indexing and ordering of join components System and method for database management supporting object-oriented programming System from optimizing query processing of multi-attribute distributed relations using local relation tuple numbers to choose semijoins Method of monitoring changes in an object-oriented database with tuned monitors Object oriented data store integration environment for integration of object oriented databases and non-object oriented data facilities Methods and systems for object-based relational distributed databases InventorAssigneeApplicationNo. 831152 filed on 04/01/1997US Classes:707/103RObject-oriented database structureExaminersPrimary: Amsbury, WayneAttorney, Agent or FirmInternational ClassG06F 017/30AbstractAn asynchronous, non-blocking method for making joins and retrieving joined data during query processing in a database. A sending object sends a join message that specifies a criteria for a join to one or more receiving objects. Receiving objects process the join message with an associated function and potentially generate a result message, then stop processing. During this process the sending object does not wait for a reply from the receiving object before continuing with subsequent processing. Join messages can be placed in a join message queue with the results from the receiving objects being placed in a results queue. The query method can be used as a basis for an ad-hoc SQL query facility that is not dependant on a flat data structure. In particular, the methods of the present invention can be used for joining both the complex structures of an object-oriented database model and the flat structures of the relational database model.Other References
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