Dealing with composite data through data model entities

Details Dealing with composite data through data model entities Dealing with composite data through data model entities

2006-05-30

2006-05-30

Corrielus, Jean M. (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

07054877

ABSTRACT:
The present invention is generally directed to a system, method and article of manufacture for accessing data represented abstractly through an abstraction model. In one embodiment, a data repository abstraction layer provides a logical view of an underlying data repository that is independent of the particular manner of data representation. A query abstraction layer is also provided and is based on the data repository abstraction layer. A runtime component performs conversion of an abstract query (i.e., a request for results or a request to modify data) into a form that can be used against a particular physical data representation. Abstract and/or physical queries are transformed according to model entities which define a relationship between logical fields of the data repository abstraction layer.

REFERENCES:
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patent: 6725227 (2004-04-01), Li
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Dettinger et al., IBM U.S. Appl. No. 10/083,075 (ROC920020044US1), filed Feb. 26, 2002, “Improved Application Portability and Extensibility Through Database Schema and Query Abstraction”.
Dettinger et al., IBM U.S. Appl. No. 10/132,228 (ROC920020088US1), filed Apr. 25, 2002, “Dynamic End User Specific Customization of an Application's Physical Data Layer Through a Data Repository Abstraction Layer”.
Dettinger et al., IBM U.S. Appl. No. 10/131,984 (ROC920020089US1) filed Apr. 25, 2002, “Remote Data Access and Integration of Distributed Data Sources Through Data Schema and Query Abstraction”.

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