The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2002
Filed:
May. 06, 1999
Tracy Kim Burroughs, Byron, MN (US);
Wilson Douglas Lee, Rochester, MN (US);
Susan Carol Luebbe, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The preferred embodiment of the present invention provides a system and method is provided that allows transparent and flexible partitioning of created objects in the context of schema mapping. The preferred schema mapper uses partition key values to facilitate partitioning of the created objects. The partition key value for an object determines what partition that object belongs in. To facilitate the most flexible schema mapping and partitioning, the partition key value for an object can be defined by the developer to be an attribute of an owning object, a primary key field of an owning object, or constant defined for its class. When new owned objects are created the partition key values are retrieved from their specified location in the owning object to determine the partition in which the new owned object belongs. In the preferred embodiment the developer also specifies a corresponding column of fields in the owned objects table to store the partitioning key values. Preferably, the partitioning key values are stored as a subset of the primary key field for the owned object. Because the primary key field is used to uniquely identify the corresponding object, the partition information in the partition key value partially determines the unique identifier of the owned object.